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       # COMPAQ COMPUTER CORPORATION
       
          DESKPRO 4000N, 4000S
       
          Device Type      Mainboard                                     
          Processor        Pentium MMX                                   
          Processor Speed  166/200/233MHz                                
          Chip Set         VIA                                           
          Video Chip Set   S3                                            
          Maximum Onboard  256MB (SDRAM supported)                       
          Memory           
          Maximum Video    2MB                                           
          Memory           
          Cache            256KB                                         
          BIOS             Unidentified                                  
          Dimensions       254mm x 218mm                                 
          I/O Options      Ethernet AUI connector, Ethernet 10BaseT      
                           connector, floppy drive interface, IDE        
                           interface, parallel port, PS/2 mouse port,    
                           serial ports (2), VGA port, riser slot, USB   
                           connectors (2), ATX power connector, CD-ROM   
                           interface, LS-120 connector                   
          NPU Options      None                                          
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose          | Location | Purpose          | Location  |
          |------------------+----------+------------------+-----------|
          | ATX power        |   ATX    | Floppy drive     |    J1     |
          | connector        |          | interface        |           |
          |------------------+----------+------------------+-----------|
          | VGA port         |   CN1    | Audio connector  |    J11    |
          |------------------+----------+------------------+-----------|
          | PS/2 mouse port  |   CN2    | External battery | P14/pins  |
          |                  |          |                  |  9 - 12   |
          |------------------+----------+------------------+-----------|
          | Ethernet AUI     |   CN3    | Ethernet AUI     |    P15    |
          | connector        |          | connector        |           |
          |------------------+----------+------------------+-----------|
          | Ethernet 10BaseT |   CN4    | Power cable/LED  |    P16    |
          | connector        |          | connector        |           |
          |------------------+----------+------------------+-----------|
          | Serial port      |   CN5    | IDE interface 1  |    P20    |
          |------------------+----------+------------------+-----------|
          | Serial port      |   CN6    | LS-120 connector |    P21    |
          |------------------+----------+------------------+-----------|
          | Parallel port    |   CN7    | CD-ROM interface |    P25    |
          |------------------+----------+------------------+-----------|
          | USB connector    |   CN8    | Riser slot       |    SL1    |
          |------------------+----------+------------------+-----------|
          | USB connector    |   CN9    |                  |           |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |             Function             |    Label     | Position |
          |----------------------------------+--------------+----------|
          | » | CMOS memory normal operation | P14/pins 1 & |  Closed  |
          |   |                              |      2       |          |
          |---+------------------------------+--------------+----------|
          |   | CMOS memory clear            | P14/pins 1 & |   Open   |
          |   |                              |      2       |          |
          |---+------------------------------+--------------+----------|
          |   | Password enabled             |    SW1/1     |   Off    |
          |---+------------------------------+--------------+----------|
          |   | Password disabled            |    SW1/1     |    On    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     DIMM CONFIGURATION                     |
          |------------------------------------------------------------|
          |       Size       |       Bank 0       |       Bank 1       |
          |------------------+--------------------+--------------------|
          |       8MB        |    (1) 1M x 64     |        None        |
          |------------------+--------------------+--------------------|
          |       16MB       |    (1) 2M x 64     |        None        |
          |------------------+--------------------+--------------------|
          |       16MB       |    (1) 1M x 64     |    (1) 1M x 64     |
          |------------------+--------------------+--------------------|
          |       24MB       |    (1) 2M x 64     |    (1) 1M x 64     |
          |------------------+--------------------+--------------------|
          |       32MB       |    (1) 4M x 64     |        None        |
          |------------------+--------------------+--------------------|
          |       32MB       |    (1) 2M x 64     |    (1) 2M x 64     |
          |------------------+--------------------+--------------------|
          |       40MB       |    (1) 4M x 64     |    (1) 1M x 64     |
          |------------------+--------------------+--------------------|
          |       48MB       |    (1) 4M x 64     |    (1) 2M x 64     |
          |------------------+--------------------+--------------------|
          |       64MB       |    (1) 8M x 64     |        None        |
          |------------------+--------------------+--------------------|
          |       64MB       |    (1) 4M x 64     |    (1) 4M x 64     |
          |------------------+--------------------+--------------------|
          |       72MB       |    (1) 8M x 64     |    (1) 1M x 64     |
          |------------------+--------------------+--------------------|
          |       80MB       |    (1) 8M x 64     |    (1) 2M x 64     |
          |------------------+--------------------+--------------------|
          |       96MB       |    (1) 8M x 64     |    (1) 4M x 64     |
          |------------------+--------------------+--------------------|
          |      128MB       |    (1) 16M x 64    |        None        |
          |------------------+--------------------+--------------------|
          |      128MB       |    (1) 8M x 64     |    (1) 8M x 64     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 DIMM CONFIGURATION (CON’T)                 |
          |------------------------------------------------------------|
          |       Size       |       Bank 0       |       Bank 1       |
          |------------------+--------------------+--------------------|
          |      136MB       |    (1) 16M x 64    |    (1) 1M x 64     |
          |------------------+--------------------+--------------------|
          |      144MB       |    (1) 16M x 64    |    (1) 2M x 64     |
          |------------------+--------------------+--------------------|
          |      160MB       |    (1) 16M x 64    |    (1) 4M x 64     |
          |------------------+--------------------+--------------------|
          |      192MB       |    (1) 16M x 64    |    (1) 8M x 64     |
          |------------------+--------------------+--------------------|
          |      256MB       |    (1) 16M x 64    |    (1) 16M x 64    |
          |------------------------------------------------------------|
          |      Note: Board accepts SDRAM memory.                     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    CACHE CONFIGURATION                     |
          |------------------------------------------------------------|
          | Note: The location of the cache is unidentified.           |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 VIDEO MEMORY CONFIGURATION                 |
          |------------------------------------------------------------|
          | Note: The location of the video memory is unidentified.    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    CPU SPEED SELECTION                     |
          |------------------------------------------------------------|
          |CPU speed|  Clock  |Multiplier|SW1/2|SW1/3|SW1/4|SW1/5|SW1/6|
          |         |  speed  |          |     |     |     |     |     |
          |---------+---------+----------+-----+-----+-----+-----+-----|
          | 166MHz  |  66MHz  |   2.5x   | On  | On  | Off | On  | Off |
          |---------+---------+----------+-----+-----+-----+-----+-----|
          | 200MHz  |  66MHz  |    3x    | Off | On  | Off | On  | Off |
          |---------+---------+----------+-----+-----+-----+-----+-----|
          | 233MHz  |  66MHz  |   3.5x   | Off | Off | Off | On  | Off |
          +------------------------------------------------------------+