(TXT) View Source
       
       # DELL COMPUTER CORPORATION
       
          4XX/ME, 4XXS/ME
       
          Processor    80486SX/80486DX/80486DX2                          
          Processor    25/33/50(internal)/66(internal)MHz                
          Speed        
          Chip Set     Intel                                             
          Max. Onboard 64MB                                              
          DRAM         
          Cache        128KB (on external cache card)                    
          BIOS         Phoenix                                           
          Dimensions   330mm x 218mm                                     
          I/O Options  Floppy drive interface, IDE interface, parallel   
                       port, PS/2 mouse port, serial ports (2), VGA      
                       feature connector, VGA port                       
          NPU Options  None                                              
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose          | Location | Purpose           | Location |
          |------------------+----------+-------------------+----------|
          | PS/2 mouse port  |   CN1    | IDE interface     |   CN8    |
          |------------------+----------+-------------------+----------|
          | Serial port 1    |   CN2    | IDE interface LED |    J1    |
          |------------------+----------+-------------------+----------|
          | Serial port 2    |   CN3    | Chassis fan power |    J2    |
          |------------------+----------+-------------------+----------|
          | Parallel port    |   CN4    | External battery  |    J3    |
          |------------------+----------+-------------------+----------|
          | VGA port         |   CN5    | Front panel       |    J4    |
          |                  |          | connector         |          |
          |------------------+----------+-------------------+----------|
          | VGA feature      |   CN6    | External cache    |   SL1    |
          | connector        |          | card slot         |          |
          |------------------+----------+-------------------+----------|
          | Floppy drive     |   CN7    |                   |          |
          | interface        |          |                   |          |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |                Function                | Jumper | Position |
          |----------------------------------------+--------+----------|
          | » | External cache card not installed  |  JP1   |   Open   |
          |   | (486/M mainboard only)             |        |          |
          |---+------------------------------------+--------+----------|
          |   | External cache card installed      |  JP1   |  Closed  |
          |   | (486/M mainboard only)             |        |          |
          |---+------------------------------------+--------+----------|
          | » | Password enabled                   |  JP2   |  Closed  |
          |---+------------------------------------+--------+----------|
          |   | Password disabled                  |  JP2   |   Open   |
          |---+------------------------------------+--------+----------|
          | » | Factory configured - do not alter  |  JP3   |   Open   |
          |---+------------------------------------+--------+----------|
          | » | BIOS & EISA upgrade from diskette  |  JP4   |  Closed  |
          |   | enabled                            |        |          |
          |---+------------------------------------+--------+----------|
          |   | BIOS & EISA upgrade from diskette  |  JP4   |   Open   |
          |   | disabled                           |        |          |
          |---+------------------------------------+--------+----------|
          | » | On board VGA enabled               |  JP5   |  Closed  |
          |---+------------------------------------+--------+----------|
          |   | On board VGA disabled              |  JP5   |   Open   |
          |---+------------------------------------+--------+----------|
          | » | EISA configuration retained at     |  JP7   |   Open   |
          |   | boot                               |        |          |
          |---+------------------------------------+--------+----------|
          |   | EISA configuration cleared at boot |  JP7   |  Closed  |
          |---+------------------------------------+--------+----------|
          | » | Factory configured - do not alter  |  JP11  |   Open   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     DRAM CONFIGURATION                     |
          |------------------------------------------------------------|
          | Size |   Bank 0    |   Bank 1    |   Bank 2   |   Bank 3   |
          |------+-------------+-------------+------------+------------|
          | 4MB  | (1) 1M x 36 |    NONE     |    NONE    |    NONE    |
          |------+-------------+-------------+------------+------------|
          | 8MB  | (1) 1M x 36 | (1) 1M x 36 |    NONE    |    NONE    |
          |------+-------------+-------------+------------+------------|
          | 12MB | (1) 1M x 36 | (1) 1M x 36 |  (1) 1M x  |    NONE    |
          |      |             |             |     36     |            |
          |------+-------------+-------------+------------+------------|
          | 16MB | (1) 1M x 36 | (1) 1M x 36 |  (1) 1M x  |  (1) 1M x  |
          |      |             |             |     36     |     36     |
          |------+-------------+-------------+------------+------------|
          | 16MB | (1) 4M x 36 |    NONE     |    NONE    |    NONE    |
          |------+-------------+-------------+------------+------------|
          | 20MB | (1) 4M x 36 | (1) 1M x 36 |    NONE    |    NONE    |
          |------+-------------+-------------+------------+------------|
          | 24MB | (1) 4M x 36 | (1) 1M x 36 |  (1) 1M x  |    NONE    |
          |      |             |             |     36     |            |
          |------+-------------+-------------+------------+------------|
          | 28MB | (1) 4M x 36 | (1) 1M x 36 |  (1) 1M x  |  (1) 1M x  |
          |      |             |             |     36     |     36     |
          |------+-------------+-------------+------------+------------|
          | 32MB | (1) 4M x 36 | (1) 4M x 36 |    NONE    |    NONE    |
          |------+-------------+-------------+------------+------------|
          | 36MB | (1) 4M x 36 | (1) 4M x 36 |  (1) 1M x  |    NONE    |
          |      |             |             |     36     |            |
          |------+-------------+-------------+------------+------------|
          | 40MB | (1) 4M x 36 | (1) 4M x 36 |  (1) 1M x  |  (1) 1M x  |
          |      |             |             |     36     |     36     |
          |------+-------------+-------------+------------+------------|
          | 48MB | (1) 4M x 36 | (1) 4M x 36 |  (1) 4M x  |    NONE    |
          |      |             |             |     36     |            |
          |------+-------------+-------------+------------+------------|
          | 52MB | (1) 4M x 36 | (1) 4M x 36 |  (1) 4M x  |  (1) 1M x  |
          |      |             |             |     36     |     36     |
          |------+-------------+-------------+------------+------------|
          | 64MB | (1) 4M x 36 | (1) 4M x 36 |  (1) 4M x  |  (1) 4M x  |
          |      |             |             |     36     |     36     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                  CPU SPEED CONFIGURATION                   |
          |------------------------------------------------------------|
          |            Speed             |             JP6             |
          |------------------------------+-----------------------------|
          |            25MHz             |           Closed            |
          |------------------------------+-----------------------------|
          |            33MHz             |            Open             |
          |------------------------------+-----------------------------|
          |            50iMHz            |           Closed            |
          |------------------------------+-----------------------------|
          |            66iMHz            |            Open             |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 VIDEO MEMORY CONFIGURATION                 |
          |------------------------------------------------------------|
          |    Wait states    |       Bank 0       |      Bank 1       |
          |-------------------+--------------------+-------------------|
          |       512KB       |    (4) 256K x 4    |       NONE        |
          |-------------------+--------------------+-------------------|
          |        1MB        |    (4) 256K x 4    |   (4) 256K x 4    |
          |------------------------------------------------------------|
          | Note: Bank 0 is factory installed and is not configurable. |
          +------------------------------------------------------------+