MOTHERBOARDS 486 (socket 2,3)
=============================

BUFFALO - DESTINY

<gopher://bitreich.org/1/th99/m/A-B/31545.gph>
    BUFFALO PRODUCTS, INC.                           
            486                                              
            486UV AT                                         
            32-bit system memory card, 32-bit local bus slot 

<gopher://bitreich.org/1/th99/m/C-D/30154.gph>
    CACHE COMPUTERS, INC.                                 
            486                                                   
            486 MODULAR EISA (Model 332/333)                      
            Proprietary CPU module slot, auxiliary keyboard       
            connector                                             

<gopher://bitreich.org/1/th99/m/C-D/30741.gph>
    CACHE COMPUTERS, INC.        
            486                          
            CACHE 486 MINI (Model 348)   
            Auxiliary keyboard connector 

<gopher://bitreich.org/1/th99/m/C-D/30008.gph>
    CACHE COMPUTERS, INC.            
            486                              
            CACHE 486-25/33 EISA (Model 321) 
            None                             

<gopher://bitreich.org/1/th99/m/C-D/30179.gph>
    CACHE COMPUTERS, INC.                                 
            486                                                   
            CACHE BAT 486 (Model 319)                             
            Serial ports (2), parallel port, game port, bus mouse 
            port, floppy drive interface, IDE interface, 32-bit   
            external memory card slot                             

<gopher://bitreich.org/1/th99/m/C-D/30740.gph>
    CACHE COMPUTERS, INC.                                 
            486                                                   
            LYNX 486 WORKSTATION (Model 335)                      
            Parallel port, IDE interface, serial ports (2). PS/2  
            bus mouse, floppy drive interface, VGA port, video    
            option connector                                      

<gopher://bitreich.org/1/th99/m/C-D/33047.gph>
    CACHING TECH CORPORATION 
            486                      
            BC3486F                  
            PS/2 mouse port          

<gopher://bitreich.org/1/th99/m/U-Z/33047.gph>
    CACHING TECH CORPORATION 
            486                      
            BC3486F                  
            PS/2 mouse port          

<gopher://bitreich.org/1/th99/m/C-D/31450.gph>
    CACHING TECH CORPORATION 
            486                      
            ISA 3486                 
            External keyboard        

<gopher://bitreich.org/1/th99/m/C-D/30839.gph>
    CAF TECHNOLOGY, INC.              
             486                               
             C426 486DX-33 50/N426 486SX-20 25 
             None                              

<gopher://bitreich.org/1/th99/m/C-D/31281.gph>
    CAF TECHNOLOGY, INC. 
             486                  
             C727                 
             None                 

<gopher://bitreich.org/1/th99/m/C-D/31285.gph>
    CAF TECHNOLOGY, INC.                                 
             486                                                  
             C747 (Ver. 002)                                      
             Floppy drive interface, game port, IDE interface,    
             parallel port, serial port (2)                       

<gopher://bitreich.org/1/th99/m/C-D/30324.gph>
    CAF TECHNOLOGY, INC. 
             486                  
             CAF I421             
             None                 

<gopher://bitreich.org/1/th99/m/C-D/31280.gph>
    CAF TECHNOLOGY, INC. 
             486                  
             E426 EISA            
             None                 

<gopher://bitreich.org/1/th99/m/C-D/31283.gph>
    CAF TECHNOLOGY, INC.            
             486                             
             L418                            
             32-bit OPTI local bus card slot 

<gopher://bitreich.org/1/th99/m/C-D/31289.gph>
    CAF TECHNOLOGY, INC. 
             486                  
             N418                 
             None                 

<gopher://bitreich.org/1/th99/m/U-Z/30989.gph>
    CALIBER COMPUTER 
             486              
             486 WB-U1        
             None             

<gopher://bitreich.org/1/th99/m/U-Z/30094.gph>
    CALIBER COMPUTER 
             486              
             80486 EISA       
             None             

<gopher://bitreich.org/1/th99/m/U-Z/30095.gph>
    CALIBER COMPUTER                 
             486                              
             80486-33A                        
             32-bit external memory card slot 

<gopher://bitreich.org/1/th99/m/U-Z/30971.gph>
    CALIBER COMPUTER 
             486              
             80486-50B        
             None             

<gopher://bitreich.org/1/th99/m/U-Z/30988.gph>
    CALIBER COMPUTER 
             486              
             EISA-486 WB      
             None             

<gopher://bitreich.org/1/th99/m/C-D/33030.gph>
    CHAINTECH COMPUTER COMPANY, LTD                      
             486                                                  
             486SPM                                               
             Green PC connector, floppy drive interface, IDE      
             interfaces (2), parallel port, serial ports (2),     
             32-bit PCI slots (3)                                 

<gopher://bitreich.org/1/th99/m/C-D/32320.gph>
    CHAINTECH COMPUTER COMPANY, LTD. 
             486                              
             333UC/340UC/333UCB/340UCB        
             None                             

<gopher://bitreich.org/1/th99/m/C-D/32311.gph>
    CHAINTECH COMPUTER COMPANY, LTD. 
             486                              
             416SX/420SX/425SX/433SC/450SC    
             None                             

<gopher://bitreich.org/1/th99/m/C-D/32310.gph>
    CHAINTECH COMPUTER COMPANY, LTD. 
             486                              
             420SXB/425SXB/433SCB/450SCB      
             None                             

<gopher://bitreich.org/1/th99/m/C-D/32307.gph>
    CHAINTECH COMPUTER COMPANY, LTD. 
             486                              
             425UXL/433UXL/425UCL/433UCL      
             32-bit VESA local bus slots (2)  

<gopher://bitreich.org/1/th99/m/C-D/32372.gph>
    CHAINTECH COMPUTER COMPANY, LTD.                 
             486                                              
             486ICP                                           
             32-bit PCI local bus slots (3), special slot (1) 

<gopher://bitreich.org/1/th99/m/C-D/32301.gph>
    CHAINTECH COMPUTER COMPANY, LTD.               
             486                                            
             486SCSL/486SCSI                                
             32-bit VESA local bus slots (2) (486SCSL only) 

<gopher://bitreich.org/1/th99/m/C-D/33003.gph>
    CHAINTECH COMPUTER COMPANY, LTD.                    
             486                                                 
             4SLD.3                                              
             32-bit VESA local bus slots (3), green PC connector 

<gopher://bitreich.org/1/th99/m/C-D/33010.gph>
    CHAINTECH COMPUTER COMPANY, LTD.                     
             486                                                  
             4SPM.3/4SPM5.1                                       
             32-bit PCI slots (3), floppy drive interface, game   
             port, green PC connector, IDE interfaces (2),        
             parallel port, serial ports (2)                      

<gopher://bitreich.org/1/th99/m/M-O/33336.gph>
    CHAINTECH COMPUTER COMPANY, LTD.                     
             486                                                  
             4SPM.3/4SPM5.1                                       
             32-bit PCI slots (3), floppy drive interface, game   
             port, green PC connector, IDE interfaces (2),        
             parallel port, serial ports (2)                      

<gopher://bitreich.org/1/th99/m/C-D/33826.gph>
    CHAINTECH COMPUTER COMPANY, LTD.                     
             486                                                  
             4SPM5.2                                              
             32-bit PCI slots (3), floppy drive interface, green  
             PC connector, IDE interfaces (2), parallel port,     
             serial ports (2)                                     

<gopher://bitreich.org/1/th99/m/C-D/33063.gph>
    CHAINTECH COMPUTER COMPANY, LTD.                    
             486                                                 
             4ULD.1                                              
             32-bit VESA local bus slots (3), green PC connector 

<gopher://bitreich.org/1/th99/m/C-D/32305.gph>
    CHAINTECH COMPUTER COMPANY, LTD.                    
             486                                                 
             VESA MAINBOARD SIS 486 (REV. 2)                     
             32-bit VESA local bus slots (3), green PC connector 

<gopher://bitreich.org/1/th99/m/C-D/32796.gph>
    CHICONY, INC.                                       
             486                                                 
             CH-471A                                             
             32-bit VESA local bus slots (3), green PC connector 

<gopher://bitreich.org/1/th99/m/C-D/33862.gph>
    CHICONY, INC.                                        
             486                                                  
             CH-471A (VER. 3)                                     
             32-bit VESA local bus slots (3), green PC connectors 
             (2)                                                  

<gopher://bitreich.org/1/th99/m/C-D/32543.gph>
    CHICONY, INC.                                        
             486                                                  
             CH-471B                                              
             32-bit VESA local bus slots (2), floppy drive        
             interface, game port, green PC connector, IDE        
             interfaces (2), parallel port, serial ports (2)      

<gopher://bitreich.org/1/th99/m/C-D/33303.gph>
    CHICONY, INC. 
             486           
             CH-486        
             None          

<gopher://bitreich.org/1/th99/m/C-D/31073.gph>
    CHICONY, INC.  
             486            
             CH-486-33/50 L 
             None           

<gopher://bitreich.org/1/th99/m/C-D/34280.gph>
    CHICONY, INC.                   
             486                             
             CH-486-33/50P                   
             32-bit VESA local bus slots (2) 

<gopher://bitreich.org/1/th99/m/C-D/30320.gph>
    CHICONY, INC. 
             486           
             CH-486-33A    
             None          

<gopher://bitreich.org/1/th99/m/C-D/30530.gph>
    CHICONY, INC. 
             486           
             CH-48633C     
             None          

<gopher://bitreich.org/1/th99/m/C-D/31075.gph>
    CHICONY, INC.       
             486                 
             CH-486DLC-33/40H(L) 
             None                

<gopher://bitreich.org/1/th99/m/C-D/30623.gph>
    CHICONY, INC.                       
             486                                 
             CH-486S-16/20/25/33H, CH-486-25/33H 
             None                                

<gopher://bitreich.org/1/th99/m/C-D/30529.gph>
    CHICONY, INC.                          
             486                                    
             CH-486S-20B/25, CH-486-33G, CH-486-50G 
             None                                   

<gopher://bitreich.org/1/th99/m/C-D/33031.gph>
    CHICONY, INC.                   
             486                             
             CH-491E                         
             32-bit VESA local bus slots (3) 

<gopher://bitreich.org/1/th99/m/C-D/32620.gph>
    CHICONY, INC.                   
             486                             
             CK-491K                         
             32-bit VESA local bus slots (3) 

<gopher://bitreich.org/1/th99/m/C-D/30185.gph>
    CLUB AMERICAN TECHNOLOGIES, INC. 
             486                              
             EAGLE 400 SERIES                 
             32-bit external memory card slot 

<gopher://bitreich.org/1/th99/m/C-D/30303.gph>
    CLUB AMERICAN TECHNOLOGIES, INC.  
             486                               
             FALCON 400 SERIES                 
             32-bit external CPU/NPU card slot 

<gopher://bitreich.org/1/th99/m/E-H/30303.gph>
    CLUB AMERICAN TECHNOLOGIES, INC.  
             486                               
             FALCON 400 SERIES                 
             32-bit external CPU/NPU card slot 

<gopher://bitreich.org/1/th99/m/C-D/31299.gph>
    CLUB AMERICAN TECHNOLOGIES, INC.  
             486                               
             FALCON 400 SERIES REVISION D      
             32-bit external CPU/NPU card slot 

<gopher://bitreich.org/1/th99/m/C-D/31306.gph>
    CLUB AMERICAN TECHNOLOGIES, INC.                     
             486                                                  
             FALCON 450 EISA SERIES (REV. B)                      
             32-bit external CPU/NPU card slot, 32-bit external   
             video card slot                                      

<gopher://bitreich.org/1/th99/m/C-D/31308.gph>
    CLUB AMERICAN TECHNOLOGIES, INC.    
             486                                 
             FALCON 450 EISA SERIES (REVISION C) 
             32-bit external CPU/NPU card slot   

<gopher://bitreich.org/1/th99/m/C-D/32809.gph>
    COMPAQ COMPUTER CORPORATION                          
             486                                                  
             DESKPRO 450/466/4100                                 
             Parallel port, PS/2 mouse port, serial port, VGA     
             feature connector, VGA port, ethernet port, AUI      
             port, external cache interface, video memory         
             interface                                            

<gopher://bitreich.org/1/th99/m/C-D/30858.gph>
    COMPAQ COMPUTER CORPORATION                          
             486                                                  
             DeskPro 486/25 (Model 001532)                        
             32-bit system memory card slot, floppy drive         
             interfaces (2)                                       

<gopher://bitreich.org/1/th99/m/C-D/30865.gph>
    COMPAQ COMPUTER CORPORATION                          
             486                                                  
             DESKPRO 486/33L DESKPRO 386/33L                      
             System processor card slot, proprietary system       
             memory card, VGA port, parallel port, serial ports   
             (2), bus mouse port, IDE interface, 3.5 and 5.25     
             inch floppy drive interface                          

<gopher://bitreich.org/1/th99/m/C-D/30862.gph>
    COMPAQ COMPUTER CORPORATION    
             486                            
             DeskPro 486/50L (Model 001987) 
             32-bit system memory card slot 

<gopher://bitreich.org/1/th99/m/C-D/32244.gph>
    COMPAQ COMPUTER CORPORATION                          
             486                                                  
             DESKPRO XE 486                                       
             External cache card, floppy drive interface, IDE     
             interface, parallel port, PS/2 mouse port, serial    
             port, VGA port                                       

<gopher://bitreich.org/1/th99/m/C-D/32239.gph>
    COMPAQ COMPUTER CORPORATION                          
             486                                                  
             DESKPRO XL 450/466/560/566/590                       
             External CPU card, 32-bit PCI bus slots (2), floppy  
             drive interface, game port, IDE interface, parallel  
             port, SCSI port, audio signal interface, PS/2 mouse  
             port, serial ports (2), CD-ROM interface, audio      
             ports (2), speaker/microphone port                   

<gopher://bitreich.org/1/th99/m/C-D/30863.gph>
    COMPAQ COMPUTER CORPORATION                          
             486                                                  
             DeskPro/M Family                                     
             System processor card slot, proprietary system       
             memory card                                          

<gopher://bitreich.org/1/th99/m/C-D/32243.gph>
    COMPAQ COMPUTER CORPORATION                          
             486                                                  
             PRESARIO 400 SERIES                                  
             Riser card, floppy drive interface, game port, IDE   
             interface, parallel port, PS/2 mouse port, serial    
             port                                                 

<gopher://bitreich.org/1/th99/m/C-D/32402.gph>
    COMPAQ COMPUTER CORPORATION                          
             486                                                  
             PRESARIO 500 SERIES                                  
             Game port, parallel port, PS/2 mouse port, serial    
             port, microphone port, headphone port, line in port, 
             line out port, modem port, telephone port, VESA      
             feature connector                                    

<gopher://bitreich.org/1/th99/m/C-D/32733.gph>
    COMPAQ COMPUTER CORPORATION                          
             486                                                  
             PRESARIO 600 SERIES                                  
             Riser card slot, floppy drive interface, IDE         
             interface, VGA port, serial ports (2), parallel      
             port, PS/2 mouse port                                

<gopher://bitreich.org/1/th99/m/C-D/32734.gph>
    COMPAQ COMPUTER CORPORATION                          
             486                                                  
             PRESARIO 600 SERIES (486 WITH 4MB)                   
             Riser card slot, floppy drive interface, IDE         
             interface, VGA port, serial ports (2), parallel      
             port, PS/2 mouse port                                

<gopher://bitreich.org/1/th99/m/C-D/32732.gph>
    COMPAQ COMPUTER CORPORATION                          
             486                                                  
             PRESARIO 600 SERIES (486-BASED MODELS)               
             IDE interface, riser card slot, floppy drive         
             interface, parallel port, PS/2 mouse port, serial    
             ports (2), VGA port                                  

<gopher://bitreich.org/1/th99/m/C-D/32403.gph>
    COMPAQ COMPUTER CORPORATION                          
             486                                                  
             PRESARIO 700/900 SERIES                              
             External cache card, game port, parallel port, PS/2  
             mouse port, serial ports (2), VGA feature connector, 
             line in port, line out port, microphone port, VGA    
             port, CD-ROM line in, TV board line in               

<gopher://bitreich.org/1/th99/m/C-D/32186.gph>
    COMPAQ COMPUTER CORPORATION                          
             486                                                  
             PRESARIO 800                                         
             External cache card slot, floppy drive interface,    
             IDE interface, parallel port, PS/2 mouse port,       
             serial port, VGA feature connector, VGA port         

<gopher://bitreich.org/1/th99/m/C-D/34369.gph>
   [no image] COMPAQ COMPUTER CORPORATION 
                  486                         
                  PROLIANT 1000R              
                  Unidentified                

<gopher://bitreich.org/1/th99/m/C-D/34376.gph>
   [no image] COMPAQ COMPUTER CORPORATION 
                  486                         
                  PROLIANT 2000               
                  Unidentified                

<gopher://bitreich.org/1/th99/m/C-D/34375.gph>
   [no image] COMPAQ COMPUTER CORPORATION 
                  486                         
                  PROLIANT 4000               
                  Unidentified                

<gopher://bitreich.org/1/th99/m/C-D/30857.gph>
    COMPAQ COMPUTER CORPORATION                          
             486                                                  
             ProLinea 4/33                                        
             Bus mouse, floppy drive interface, IDE interface,    
             parallel port, serial ports (2), VGA port            

<gopher://bitreich.org/1/th99/m/C-D/32692.gph>
    COMPAQ COMPUTER CORPORATION                          
             486                                                  
             PROLINEA MT                                          
             External cache card slot, floppy drive interface,    
             IDE interface, parallel port, PS/2 mouse port,       
             serial port, VGA feature connector, VGA port         

<gopher://bitreich.org/1/th99/m/C-D/30724.gph>
    COMPAQ COMPUTER CORPORATION                          
             486                                                  
             SYSTEMPRO 386/33, SYSTEMPRO 486/33                   
             System processor card slot, system processor         
             card/Proprietary expansion card slot, 32-bit system  
             memory card, 32-bit external memory card, VGA port,  
             parallel port, serial port, bus mouse port, IDE      
             interface, floppy drive interface                    

<gopher://bitreich.org/1/th99/m/C-D/30864.gph>
    COMPAQ COMPUTER CORPORATION                          
             486                                                  
             SYSTEMPRO 486/33E                                    
             System processor card slot, proprietary system       
             memory card                                          

<gopher://bitreich.org/1/th99/m/C-D/30866.gph>
    COMPAQ COMPUTER CORPORATION                          
             486                                                  
             SYSTEMPRO/LT                                         
             System processor card slot, proprietary system       
             memory card                                          

<gopher://bitreich.org/1/th99/m/C-D/32032.gph>
    COMPUADD, INC.                        
             486                                   
             486 ISA HP SX/DX                      
             Floppy drive interface, IDE interface 

<gopher://bitreich.org/1/th99/m/C-D/33530.gph>
    COMPUDYNE                                            
             486                                                  
             ALL-IN-ONE MULTI-CPU SYSTEM BOARD                    
             32-bit VESA local bus slot, floppy drive interface,  
             game interface, IDE interface, parallel port, serial 
             ports (2)                                            

<gopher://bitreich.org/1/th99/m/C-D/34320.gph>
    COMPUDYNE                                            
             486                                                  
             UTD 4700 ALL IN ONE                                  
             32-bit VESA local bus slot, floppy drive interface,  
             game interface, IDE interface, parallel port, serial 
             ports (2)                                            

<gopher://bitreich.org/1/th99/m/C-D/34319.gph>
    COMPUDYNE                                            
             486                                                  
             UTD 4700ZIF ALL IN ONE                               
             32-bit VESA local bus slot, serial ports (2), game   
             interface, parallel port, floppy drive interface,    
             IDE interface                                        

<gopher://bitreich.org/1/th99/m/C-D/34318.gph>
    COMPUDYNE                                            
             486                                                  
             UTD 4800AIO EISA VESA ZIF                            
             32-bit VESA local bus slot, floppy drive interface,  
             IDE interface, parallel port, serial ports (2)       

<gopher://bitreich.org/1/th99/m/C-D/31247.gph>
    COMPUTREND SYSTEMS, INC.     
             486                          
             ALI 486 NONCACHE             
             Auxiliary keyboard connector 

<gopher://bitreich.org/1/th99/m/C-D/31248.gph>
    COMPUTREND SYSTEMS, INC.                             
             486                                                  
             CONTAQ SINGLE CHIP 486 (MS-4123 Ver. 1.1)            
             32-bit VESA card slots (2), auxiliary keyboard       
             connector                                            

<gopher://bitreich.org/1/th99/m/C-D/32986.gph>
    COMPUTREND SYSTEMS, INC.         
             486                              
             CONTAQ SINGLE CHIP 486 (MS-4125) 
             32-bit VESA local bus slots (2)  

<gopher://bitreich.org/1/th99/m/C-D/30189.gph>
    COMPUTREND SYSTEMS, INC.     
             486                          
             CONTAQ-386                   
             Auxiliary keyboard connector 

<gopher://bitreich.org/1/th99/m/C-D/32984.gph>
    COMPUTREND SYSTEMS, INC. 
             486                      
             CONTAQ-386 (MS-3124)     
             None                     

<gopher://bitreich.org/1/th99/m/C-D/30412.gph>
    COMPUTREND SYSTEMS, INC. 
             486                      
             CONTAQ-486               
             None                     

<gopher://bitreich.org/1/th99/m/C-D/33229.gph>
    COMPUTREND SYSTEMS, INC.                             
             486                                                  
             PCI486 AL2                                           
             32-bit PCI slots (3), floppy drive interface, green  
             PC connector, IDE interfaces (2), parallel port,     
             serial ports (2)                                     

<gopher://bitreich.org/1/th99/m/C-D/33223.gph>
    COMPUTREND SYSTEMS, INC.                             
             486                                                  
             PREMIO PCI 486AL3                                    
             32-bit PCI slots (3), floppy drive interface, green  
             PC connector, IDE interfaces (2), parallel port,     
             serial ports (2)                                     

<gopher://bitreich.org/1/th99/m/C-D/33230.gph>
    COMPUTREND SYSTEMS, INC.                             
             486                                                  
             VLB S14 (SIS486)                                     
             Floppy drive interface, game interface, green PC     
             connector, IDE interface, parallel port, PS/2 mouse  
             port, serial ports (2), VGA feature connector, VGA   
             port, riser slot                                     

<gopher://bitreich.org/1/th99/m/C-D/33228.gph>
    COMPUTREND SYSTEMS, INC.                            
             486                                                 
             VLB486 AL5 (ALI-486G)                               
             32-bit VESA local bus slots (3), green PC connector 

<gopher://bitreich.org/1/th99/m/C-D/34414.gph>
    CONCORD OFFICE AUTOMATION INDUSTRIAL (HK) LTD.       
             486                                                  
             COA-921                                              
             32-bit PCI slots (3), floppy drive interface, green  
             PC connector, IDE interfaces (2), parallel port,     
             serial ports (2)                                     

<gopher://bitreich.org/1/th99/m/C-D/30707.gph>
    CORE PACIFIC ELECTRONICS, INC. 
             486                            
             486 MAINBOARD                  
             None                           

<gopher://bitreich.org/1/th99/m/C-D/30726.gph>
    CORE PACIFIC ELECTRONICS, INC. 
             486                            
             80486-33                       
             None                           

<gopher://bitreich.org/1/th99/m/P-R/30726.gph>
    CORE PACIFIC ELECTRONICS, INC. 
             486                            
             80486-33                       
             None                           

<gopher://bitreich.org/1/th99/m/C-D/31303.gph>
    CREATIVE ELECTRONIC, INC.                            
             486                                                  
             PowerUser 3820                                       
             32-bit external CPU card slot, bus mouse port,       
             floppy drive interface, game port, IDE interface,    
             parallel port, serial port (2), SVGA port            

<gopher://bitreich.org/1/th99/m/C-D/33183.gph>
    CSS LABORATORIES, INC.                               
             486                                                  
             MAXSYS 462, 4/100 VL                                 
             32-bit VESA local bus slot, CPU slot, floppy drive   
             interface, IDE interface, parallel port, auxiliary   
             parallel port, serial ports (2), auxiliary serial    
             ports (2), auxiliary keyboard connectors (2)         

<gopher://bitreich.org/1/th99/m/C-D/31499.gph>
    CSS LABORATORIES, INC.                               
             486                                                  
             MAXSYS 486MTE/VL                                     
             CPU module slot, 32-bit VESA local bus slot (1),     
             floppy drive interface, IDE interface, parallel      
             port, serial ports (2)                               

<gopher://bitreich.org/1/th99/m/C-D/34438.gph>
    CSS LABORATORIES, INC.                               
             486                                                  
             MB-4864                                              
             32-bit PCI slots (3), floppy drive interface, IDE    
             interfaces (2), parallel port, PS/2 mouse interface, 
             serial ports (2)                                     

<gopher://bitreich.org/1/th99/m/C-D/32102.gph>
    CSS LABORATORIES, INC.                               
             486                                                  
             MINIMAX/LITTLE MAX 486                               
             Floppy drive interface, IDE interface, parallel      
             port, serial ports (2)                               

<gopher://bitreich.org/1/th99/m/C-D/34434.gph>
    CSS LABORATORIES, INC.                              
              486                                                 
              MS-4861                                             
              Floppy drive interface, IDE interfaces (2),         
              parallel port, serial ports (2), VGA port, PC/104   
              connectors (2)                                      

<gopher://bitreich.org/1/th99/m/C-D/34549.gph>
    CSS LABORATORIES, INC.                              
              486                                                 
              PB-10903                                            
              32-bit PCI slots (3), CPU slot, PS/2 mouse          
              interface, IR connectors (2)                        

<gopher://bitreich.org/1/th99/m/C-D/31298.gph>
    CSS LABORATORIES, INC.                              
              486                                                 
              PREFERRED 433GA                                     
              32-bit external CPU/NPU card slot, 32-bit local     
              video card slot, auxiliary keyboard, floppy         
              interface, IDE interface,                           

<gopher://bitreich.org/1/th99/m/C-D/31273.gph>
    CSS LABORATORIES, INC.                              
              486                                                 
              PREFERRED 433GE (Rev. B)                            
              32-bit external memory card slot, 32-bit external   
              cache card slot                                     

<gopher://bitreich.org/1/th99/m/C-D/33138.gph>
    CSS LABORATORIES, INC.                              
              486                                                 
              PREFERRED 462 PCI/VL ESP, MB-4862                   
              32-bit VESA local bus slots (2), 32-bit PCI slots   
              (3)                                                 

<gopher://bitreich.org/1/th99/m/C-D/32048.gph>
    CSS LABORATORIES, INC.          
              486                             
              PREFERRED 486 GA/VL ESP         
              32-bit VESA local bus slots (2) 

<gopher://bitreich.org/1/th99/m/C-D/32087.gph>
    CSS LABORATORIES, INC.                           
              486                                              
              PREFERRED 486 MGE/VL                             
              CPU module slot, 32-bit VESA local bus slots (2) 

<gopher://bitreich.org/1/th99/m/C-D/34720.gph>
    DASH COMPUTER, INC.                                 
              486                                                 
              486 VL3 CACHE (MV035E)                              
              32-bit VESA local bus slots (3), green PC connector 

<gopher://bitreich.org/1/th99/m/C-D/31175.gph>
    DASH COMPUTER, INC.                
              486                                
              486WB WRITEBACK-CACHE SYSTEM BOARD 
              32-bit external memory card slot   

<gopher://bitreich.org/1/th99/m/C-D/31234.gph>
    DASH COMPUTER, INC. 
              486                 
              DC 486 EISA         
              None                

<gopher://bitreich.org/1/th99/m/C-D/33696.gph>
    DASH COMPUTER, INC.                                 
              486                                                 
              DC-420                                              
              32-bit VESA local bus slot, 32-bit PCI slots (3),   
              floppy drive interface, green PC connector, IDE     
              interfaces (2), parallel port, serial ports (2),    
              cache slot                                          

<gopher://bitreich.org/1/th99/m/C-D/30286.gph>
    DASH COMPUTER, INC.              
              486                              
              DC-486SX 25/33/50                
              32-bit external memory card slot 

<gopher://bitreich.org/1/th99/m/C-D/31293.gph>
    DASH COMPUTER, INC.       
              486                       
              DC3486 VESA               
              32-bit VESA card slot (2) 

<gopher://bitreich.org/1/th99/m/U-Z/31293.gph>
    DASH COMPUTER, INC.       
              486                       
              DC3486 VESA               
              32-bit VESA card slot (2) 

<gopher://bitreich.org/1/th99/m/C-D/33132.gph>
    DASH COMPUTER, INC.                                 
              486                                                 
              GREEN FUNCTION VL-BUS (MV035)                       
              32-bit VESA local bus slots (3), green PC connector 

<gopher://bitreich.org/1/th99/m/C-D/35717.gph>
    DATAEXPERT CORPORATION                              
              486                                                 
              AIO4044                                             
              Floppy drive interface, IDE interface, parallel     
              port, PS/2 mouse port, serial ports (2), VGA        
              feature connector, VGA port, riser slot             

<gopher://bitreich.org/1/th99/m/C-D/35930.gph>
    DATAEXPERT CORPORATION                              
              486                                                 
              AIO4045                                             
              Ethernet 10Base5 connector, floppy drive interface, 
              green PC connector, IDE interface, parallel port,   
              serial ports (2), VGA port, riser slot              

<gopher://bitreich.org/1/th99/m/C-D/32041.gph>
    DATAEXPERT CORPORATION          
              486                             
              ALI-1429G(EXP4049)              
              32-bit VESA local bus slots (3) 

<gopher://bitreich.org/1/th99/m/C-D/31319.gph>
    DATAEXPERT CORPORATION 
              486                    
              EISA 486WB             
              None                   

<gopher://bitreich.org/1/th99/m/C-D/31975.gph>
    DATAEXPERT CORPORATION          
              486                             
              EXP3406                         
              32-bit VESA local bus slots (2) 

<gopher://bitreich.org/1/th99/m/C-D/35866.gph>
    DATAEXPERT CORPORATION                              
              486                                                 
              EXP4044                                             
              32-bit VESA local bus slots (3), green PC connector 

<gopher://bitreich.org/1/th99/m/C-D/32985.gph>
    DATAEXPERT CORPORATION                              
              486                                                 
              EXP4045                                             
              32-bit VESA local bus slots (3), green PC connector 

<gopher://bitreich.org/1/th99/m/C-D/35867.gph>
    DATAEXPERT CORPORATION                              
              486                                                 
              EXP4349                                             
              32-bit VESA local bus slots (3), green PC connector 

<gopher://bitreich.org/1/th99/m/C-D/35713.gph>
    DATAEXPERT CORPORATION                              
              486                                                 
              EXP8049                                             
              32-bit PCI slots (4), floppy drive interface, green 
              PC connector, IDE interface, parallel port, PS/2    
              mouse interface, serial ports (2), wake on modem    
              connector                                           

<gopher://bitreich.org/1/th99/m/C-D/35714.gph>
    DATAEXPERT CORPORATION                              
              486                                                 
              EXP8449                                             
              32-bit PCI slots (3), floppy drive interface, green 
              PC connector, IDE interfaces (2), parallel port,    
              PS/2 mouse port, serial ports (2)                   

<gopher://bitreich.org/1/th99/m/C-D/35715.gph>
    DATAEXPERT CORPORATION                              
              486                                                 
              EXP8C49                                             
              32-bit PCI slots (3), floppy drive interface, green 
              PC connector, IDE interfaces (2), parallel port,    
              PS/2 mouse port, serial ports (2)                   

<gopher://bitreich.org/1/th99/m/C-D/31797.gph>
    DATAEXPERT CORPORATION          
              486                             
              HINT-3/486WB                    
              32-bit VESA local bus slots (2) 

<gopher://bitreich.org/1/th99/m/C-D/30713.gph>
    DATAEXPERT CORPORATION 
              486                    
              OPTI-486WB             
              None                   

<gopher://bitreich.org/1/th99/m/C-D/35929.gph>
    DATAEXPERT CORPORATION     
              486                        
              OPTI-495SX                 
              32-bit VESA local bus slot 

<gopher://bitreich.org/1/th99/m/C-D/35868.gph>
    DATAEXPERT CORPORATION          
              486                             
              OPTI-495SX-2VL                  
              32-bit VESA local bus slots (2) 

<gopher://bitreich.org/1/th99/m/C-D/30714.gph>
    DATAEXPERT CORPORATION 
              486                    
              OPTI-495WB             
              None                   

<gopher://bitreich.org/1/th99/m/C-D/31134.gph>
    DATAEXPERT CORPORATION 
              486                    
              OPTI-495WB Ver 2.0     
              None                   

<gopher://bitreich.org/1/th99/m/C-D/31799.gph>
    DATAEXPERT CORPORATION          
              486                             
              OPTI-495XLC 3/486WB CACHE       
              32-bit VESA local bus slots (2) 

<gopher://bitreich.org/1/th99/m/U-Z/31799.gph>
    DATAEXPERT CORPORATION          
              486                             
              OPTI-495XLC 3/486WB CACHE       
              32-bit VESA local bus slots (2) 

<gopher://bitreich.org/1/th99/m/C-D/31727.gph>
    DATAEXPERT CORPORATION                              
              486                                                 
              TERMINATOR 5-VL                                     
              32-bit VESA local bus slots (2), floppy drive       
              interface, IDE interface,                           

<gopher://bitreich.org/1/th99/m/C-D/32071.gph>
    DATAEXPERT CORPORATION/VISION TECHNOLOGIES 
              486                                        
              486WB CACHE/ESP486 (VER. 1)                
              32-bit VESA local bus slots (3)            

<gopher://bitreich.org/1/th99/m/U-Z/32071.gph>
    DATAEXPERT CORPORATION/VISION TECHNOLOGIES 
              486                                        
              486WB CACHE/ESP486 (VER. 1)                
              32-bit VESA local bus slots (3)            

<gopher://bitreich.org/1/th99/m/C-D/34206.gph>
    DATAVAN INTERNATIONAL CORPORATION                   
              486                                                 
              DTV-05C                                             
              Floppy drive interface, IDE interface, parallel     
              port, serial ports (2), VGA feature connector, VGA  
              port                                                

<gopher://bitreich.org/1/th99/m/C-D/31502.gph>
    DD & TT ENTERPRISE USA COMPANY                      
              486                                                 
              DT ESCORT SYSTEM BOARD B                            
              Floppy drive interface, IDE interface parallel      
              port,                                               

<gopher://bitreich.org/1/th99/m/C-D/30999.gph>
    DD & TT ENTERPRISE USA COMPANY      
              486                                 
              DT-423S4L (Revision C2 and earlier) 
              None                                

<gopher://bitreich.org/1/th99/m/C-D/31414.gph>
    DD & TT ENTERPRISE USA COMPANY         
              486                                    
              DT-LB134 (36-BIT SIMM VERSION)         
              PS/2 mouse, 32-bit VESA local bus slot 

<gopher://bitreich.org/1/th99/m/C-D/31415.gph>
    DD & TT ENTERPRISE USA COMPANY         
              486                                    
              DT-LB134 (9-BIT SIMM VERSION)          
              PS/2 mouse, 32-bit VESA local bus slot 

<gopher://bitreich.org/1/th99/m/C-D/31460.gph>
    DD & TT ENTERPRISE USA COMPANY                      
              486                                                 
              DT-LB2AL                                            
              Floppy drive interface, game port, IDE interface,   
              parallel port,                                      

<gopher://bitreich.org/1/th99/m/C-D/33186.gph>
    DEICO ELECTRONICS, INC.                             
              486                                                 
              486-ISA                                             
              Floppy drive interface, IDE interface, parallel     
              port, serial ports (2)                              

<gopher://bitreich.org/1/th99/m/C-D/30531.gph>
    DEICO ELECTRONICS, INC.                             
              486                                                 
              486DSX                                              
              Parallel port, serial ports (2), floppy drive       
              interface, IDE interface                            

<gopher://bitreich.org/1/th99/m/C-D/30608.gph>
    DEICO ELECTRONICS, INC.                             
              486                                                 
              PREDATOR I                                          
              Floppy drive interface, IDE interface, parallel     
              port, PS/2 mouse port, serial ports (2)             

<gopher://bitreich.org/1/th99/m/C-D/31556.gph>
    DEICO ELECTRONICS, INC.                             
              486                                                 
              PREDATOR II                                         
              Floppy drive interface, IDE interface, parallel     
              port, PS/2 mouse port                               

<gopher://bitreich.org/1/th99/m/C-D/31447.gph>
    DEICO ELECTRONICS, INC. 
              486                     
              PREDATOR-S              
              PS/2 mouse port         

<gopher://bitreich.org/1/th99/m/C-D/31451.gph>
    DEICO ELECTRONICS, INC.                             
              486                                                 
              PREDATOR-Z                                          
              Floppy drive interface, IDE interface, parallel     
              port, PS/2 mouse port, serial ports (2)             

<gopher://bitreich.org/1/th99/m/C-D/31917.gph>
    DELL COMPUTER CORPORATION                    
              486                                          
              4000/XE SERIES                               
              External cache card, floppy drive interface, 

<gopher://bitreich.org/1/th99/m/C-D/32161.gph>
    DELL COMPUTER CORPORATION                           
              486                                                 
              486/MT                                              
              32-bit VESA local bus slots (2), floppy drive       
              interface, IDE interface, parallel port, PS/2 mouse 
              port, serial ports (2), VGA feature connector, VGA  
              port                                                

<gopher://bitreich.org/1/th99/m/C-D/32158.gph>
    DELL COMPUTER CORPORATION                           
              486                                                 
              4XX/M, 4XXS/M                                       
              Floppy drive interface, IDE interface, parallel     
              port, PS/2 mouse port, serial ports (2), VGA        
              feature connector, VGA port                         

<gopher://bitreich.org/1/th99/m/C-D/32160.gph>
    DELL COMPUTER CORPORATION                           
              486                                                 
              4XX/ME, 4XXS/ME                                     
              Floppy drive interface, IDE interface, parallel     
              port, PS/2 mouse port, serial ports (2), VGA        
              feature connector, VGA port                         

<gopher://bitreich.org/1/th99/m/C-D/35203.gph>
    DELL COMPUTER CORPORATION       
              486                             
              DGX-2 PROCESSOR BOARD           
              VGA feature connector, VGA port 

<gopher://bitreich.org/1/th99/m/C-D/31327.gph>
    DELL COMPUTER CORPORATION                           
              486                                                 
              DIMENSION 486SX/25, 486DX/33, 486DX2/50             
              Floppy drive interface, IDE interface, bus mouse    
              port                                                

<gopher://bitreich.org/1/th99/m/C-D/35949.gph>
    DELL COMPUTER CORPORATION                           
              486                                                 
              DIMENSION XPS XX MDT, XPS XX FS                     
              32-bit VESA local bus slots (2), floppy drive       
              interface, IDE interface, parallel port, PS/2 mouse 
              port, serial ports (2)                              

<gopher://bitreich.org/1/th99/m/C-D/34043.gph>
    DELL COMPUTER CORPORATION                           
              486                                                 
              DIMENSION XPS XXX                                   
              32-bit VESA local bus slots (2), floppy drive       
              interface, IDE interface (2), parallel port, PS/2   
              mouse port, serial ports (2)                        

<gopher://bitreich.org/1/th99/m/C-D/35948.gph>
    DELL COMPUTER CORPORATION                           
              486                                                 
              DIMENSION XPS XXX MDT II                            
              32-bit VESA local bus slots (2), floppy drive       
              interface, IDE interfaces (2), parallel port, PS/2  
              mouse port, serial ports (2)                        

<gopher://bitreich.org/1/th99/m/C-D/34041.gph>
    DELL COMPUTER CORPORATION                           
              486                                                 
              DIMENSION XPS XXXV                                  
              32-bit VESA local bus slots (2), floppy drive       
              interface, IDE interface, parallel port, PS/2 mouse 
              port, serial ports (2)                              

<gopher://bitreich.org/1/th99/m/C-D/33432.gph>
    DELL COMPUTER CORPORATION                           
              486                                                 
              MIDSIZE 486 ISA/VL SYSTEMS                          
              32-bit VESA local bus slot, floppy drive interface, 
              IDE interface, parallel port, PS/2 mouse port,      
              serial ports (2), feature connector, VGA port,      
              riser slot                                          

<gopher://bitreich.org/1/th99/m/C-D/33650.gph>
    DELL COMPUTER CORPORATION                           
              486                                                 
              OMNIPLEX 4XX/ME                                     
              Floppy drive interface, IDE interface, parallel     
              port, PS/2 mouse port, serial ports (2), feature    
              connector, VGA port, riser slot, cache slot         

<gopher://bitreich.org/1/th99/m/C-D/32139.gph>
    DELL COMPUTER CORPORATION                           
              486                                                 
              POWEREDGE SP4XX                                     
              32-bit riser card, external cache card, floppy      
              drive interface, IDE interface, parallel port, PS/2 
              mouse port, serial ports (2), VGA feature           
              connector, VGA port                                 

<gopher://bitreich.org/1/th99/m/C-D/31991.gph>
    DELL COMPUTER CORPORATION                           
              486                                                 
              POWEREDGE XE 4XX                                    
              32-bit riser card, external cache card, floppy      
              drive interface, IDE interface, parallel port, PS/2 
              mouse port, serial ports (2), VGA feature           
              connector, VGA port                                 

<gopher://bitreich.org/1/th99/m/C-D/30909.gph>
    DELL COMPUTER CORPORATION                           
              486                                                 
              Precision 486SX/25, 486DX/33, 486DX2/50             
              Bus mouse port, floppy interface, IDE interface,    
              parallel port, proprietary expansion module, serial 
              ports (2), VGA port                                 

<gopher://bitreich.org/1/th99/m/C-D/30908.gph>
    DELL COMPUTER CORPORATION              
              486                                    
              Precision 486SX/25, Precision 486DX/33 
              None                                   

<gopher://bitreich.org/1/th99/m/C-D/33648.gph>
    DELL COMPUTER CORPORATION                           
              486                                                 
              SYSTEM 40XX/XE                                      
              Floppy drive interface, IDE interface, parallel     
              port, PS/2 mouse port, serial ports (2), feature    
              connector, VGA port, riser slot, cache slot         

<gopher://bitreich.org/1/th99/m/C-D/30917.gph>
    DELL COMPUTER CORPORATION       
              486                             
              System 425E/433E                
              Parallel port, serial ports (2) 

<gopher://bitreich.org/1/th99/m/C-D/31598.gph>
    DELL COMPUTER CORPORATION  
              486                        
              SYSTEM 425TE, SYSTEM 433TE 
              32-bit system memory card  

<gopher://bitreich.org/1/th99/m/C-D/30928.gph>
    DELL COMPUTER CORPORATION                           
              486                                                 
              System 433P                                         
              Bus mouse, cache card/shunt card slot, floppy       
              interface, IDE interface, parallel port, riser card 
              slot, serial ports (2), VGA port                    

<gopher://bitreich.org/1/th99/m/C-D/32149.gph>
    DELL COMPUTER CORPORATION                           
              486                                                 
              SYSTEM 486/L                                        
              External cache card, floppy drive interface, IDE    
              interface, parallel port, PS/2 mouse port, serial   
              ports (2), VGA feature connector, VGA port          

<gopher://bitreich.org/1/th99/m/C-D/31332.gph>
    DELL COMPUTER CORPORATION                           
              486                                                 
              SYSTEM 486/T                                        
              Floppy drive interface, IDE interface, bus mouse    
              port                                                

<gopher://bitreich.org/1/th99/m/C-D/30903.gph>
    DELL COMPUTER CORPORATION                           
              486                                                 
              System 486D                                         
              Bus mouse, floppy interface, IDE interface,         
              parallel port, serial ports (2), VGA port           

<gopher://bitreich.org/1/th99/m/C-D/30940.gph>
    DELL COMPUTER CORPORATION                           
              486                                                 
              SYSTEM 486P                                         
              Bus mouse port, floppy interface, IDE interface,    
              parallel port, riser card slot, serial ports (2),   
              video upgrade socket, VGA port                      

<gopher://bitreich.org/1/th99/m/C-D/31952.gph>
    DELL COMPUTER CORPORATION                           
              486                                                 
              SYSTEM 4XX/P NETPLEX                                
              Bus mouse port, floppy drive interface, IDE         
              interface, parallel port, riser card slot, serial   
              ports (2), VGA feature connector, VGA port          

<gopher://bitreich.org/1/th99/m/C-D/30912.gph>
    DELL COMPUTER CORPORATION                           
              486                                                 
              System 4XXDE                                        
              32-bit external CPU card slot, bus mouse, floppy    
              drive interface, IDE interface, status LCD,         
              parallel port, serial ports (2), VGA port           

<gopher://bitreich.org/1/th99/m/C-D/30941.gph>
    DELL COMPUTER CORPORATION                           
              486                                                 
              SYSTEM 4XXSE                                        
              32-bit external CPU/NPU card slot, floppy drive     
              interface, IDE interface, parallel port, serial     
              ports (2), system status LCD, VGA port              

<gopher://bitreich.org/1/th99/m/C-D/32011.gph>
    DELL COMPUTER CORPORATION                           
              486                                                 
              SYSTEM V486/50/66 FS                                
              Floppy drive interface, IDE interface, parallel     
              interface, PS/2 mouse interface, serial ports (2),  
              VGA feature connector                               

<gopher://bitreich.org/1/th99/m/C-D/31988.gph>
    DELL COMPUTER CORPORATION                           
              486                                                 
              SYSTEM V486/50/66 MDT                               
              Floppy drive interface, IDE interface, parallel     
              port, serial ports (2)                              

<gopher://bitreich.org/1/th99/m/C-D/31958.gph>
    DELL COMPUTER CORPORATION                           
              486                                                 
              SYSTEM V486/XX MDT                                  
              Floppy drive interface, IDE interface, parallel     
              port, PS/2 mouse port,                              

<gopher://bitreich.org/1/th99/m/C-D/31954.gph>
    DELL COMPUTER CORPORATION 
              486                       
              SYSTEM V486/XX REV. 1     

<gopher://bitreich.org/1/th99/m/C-D/32000.gph>
    DELL COMPUTER CORPORATION                           
              486                                                 
              SYSTEM V486/XX SDT REV. 3                           
              Floppy drive interface, IDE interface, parallel     
              port, PS/2 mouse port, serial ports (2), VGA port   

<gopher://bitreich.org/1/th99/m/C-D/31453.gph>
    DELL COMPUTER CORPORATION                           
              486                                                 
              SYSTEM XPS 50/66 FS/MDT                             
              32-bit VESA local bus slots (2), floppy drive       
              interface, IDE interface, parallel port, PS/2 mouse 
              port, serial ports (2)                              

<gopher://bitreich.org/1/th99/m/C-D/32012.gph>
    DELL COMPUTER CORPORATION                           
              486                                                 
              SYSTEMS 4XX/L(V), 4XX/MX(V) OPTIPLEX                
              32-bit external cache card, 32-bit VESA local bus   
              slot, floppy drive interface, IDE interface,        
              parallel port, PS/2 mouse port, serial ports (2),   
              VGA feature connector, VGA port                     

<gopher://bitreich.org/1/th99/m/C-D/32013.gph>
    DELL COMPUTER CORPORATION                           
              486                                                 
              SYSTEMS 4XX/V & 4XX/DV                              
              32-bit VESA local bus slots (2), floppy drive       
              interface, IDE interface, parallel port, PS/2 mouse 
              port, serial ports (2), VGA feature connector, VGA  
              port                                                

<gopher://bitreich.org/1/th99/m/C-D/32162.gph>
    DELL COMPUTER CORPORATION                           
              486                                                 
              SYSTEMS 4XX/V, 4XXS/V, 4XX/DV, 4XXS/DV              
              32-bit VESA local bus slots (2), floppy drive       
              interface, IDE interface, parallel port, PS/2 mouse 
              port, serial ports (2), VGA feature connector, VGA  
              port                                                

<gopher://bitreich.org/1/th99/m/C-D/31955.gph>
    DELL COMPUTER CORPORATION 
              486                       
              V486DX/XX, XXS REV. 2     

<gopher://bitreich.org/1/th99/m/C-D/31990.gph>
    DELL COMPUTER CORPORATION                           
              486                                                 
              XPS 486 MIDSIZE                                     
              32-bit VESA local bus slots (2), floppy drive       
              interface, IDE interface, parallel port, PS/2 mouse 
              port, serial ports (2)                              

<gopher://bitreich.org/1/th99/m/C-D/32198.gph>
    DELL COMPUTER CORPORATION                           
              486                                                 
              XPS 486 MIDSIZE VER. 2                              
              32-bit VESA local bus slots (2), floppy drive       
              interface, IDE interface, parallel port, PS/2 mouse 
              port, serial ports (2)                              

<gopher://bitreich.org/1/th99/m/C-D/34605.gph>
    DENSITRON COPRORATION                               
              486                                                 
              DPX-57                                              
              Ethernet 10BaseT connector, Ethernet AUI, floppy    
              drive interface, game/MIDI port, green PC           
              connector, IDE interface, SCSI interface, parallel  
              port, PS/2 mouse interface, serial ports (2), VESA  
              feature connector, VGA port, riser slot, flat panel 
              conne                                               

<gopher://bitreich.org/1/th99/m/C-D/30014.gph>
    DESTINY COMPUTERS, INC. 
              486                     
              486 ACE ADVANTAGE       
              None                    

<gopher://bitreich.org/1/th99/m/C-D/32086.gph>
    DESTINY COMPUTERS, INC.                             
              486                                                 
              BLITZ 486 SLC-2                                     
              Floppy drive interface, IDE interface, parallel     
              port, PS/2 mouse port, serial ports (2)