DELL COMPUTER CORPORATION
=========================

   SYSTEM V486/50/66 MDT

   Processor    80486DX/80486DX2/Pentium Overdrive                
   Processor    25/33/50(internal)/66(internal)MHz                
   Speed        
   Chip Set     Unidentified                                      
   Max. Onboard 64MB                                              
   DRAM         
   Cache        128KB                                             
   BIOS         Unidentified                                      
   Dimensions   330mm x 218mm                                     
   I/O Options  Floppy drive interface, IDE interface, parallel   
                port, serial ports (2)                            
   NPU Options  None                                              

<gopher://bitreich.org/I/th99/m/C-D/31988-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose           | Location | Purpose          | Location |
   |-------------------+----------+------------------+----------|
   | External battery  |   CN1    | Floppy drive     |   CN6    |
   |                   |          | interface        |          |
   |-------------------+----------+------------------+----------|
   | IDE interface LED |   CN2    | Parallel port    |   CN7    |
   |-------------------+----------+------------------+----------|
   | Chassis fan power |   CN3    | Serial ports     |   CN8    |
   |-------------------+----------+------------------+----------|
   | Video connector   |   CN4    | Mouse connector  |   CN9    |
   |-------------------+----------+------------------+----------|
   | IDE interface     |   CN5    |                  |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |                Function                | Jumper | Position |
   |----------------------------------------+--------+----------|
   |>> | Mouse connector enabled (uses      |   J1   |  Closed  |
   |   | IRQ12)                             |        |          |
   |---+------------------------------------+--------+----------|
   |   | Mouse connector disabled (disables |   J1   |   Open   |
   |   | IRQ12)                             |        |          |
   |---+------------------------------------+--------+----------|
   |>> | Factory configured - do not alter  |   J2   |  Closed  |
   |---+------------------------------------+--------+----------|
   |>> | Factory configured - do not alter  |   J3   |   Open   |
   |---+------------------------------------+--------+----------|
   |>> | Factory configured - do not alter  |   J4   |  Closed  |
   |---+------------------------------------+--------+----------|
   |>> | CMOS memory normal operation       |   J5   |  Closed  |
   |---+------------------------------------+--------+----------|
   |   | CMOS memory clear                  |   J5   |   Open   |
   |---+------------------------------------+--------+----------|
   |>> | On board VGA controller enabled    |   J6   |  Closed  |
   |---+------------------------------------+--------+----------|
   |   | On board VGA controller disabled   |   J6   |   Open   |
   |---+------------------------------------+--------+----------|
   |>> | Factory configured - do not alter  |   J7   |   Open   |
   |---+------------------------------------+--------+----------|
   |>> | Factory configured - do not alter  |   J8   |   Open   |
   |---+------------------------------------+--------+----------|
   |>> | Factory configured - do not alter  |  J11   |   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        |        J9         |        J10        |
   |--------------------+-------------------+-------------------|
   |       25MHz        |      Closed       |        N/A        |
   |--------------------+-------------------+-------------------|
   |       33MHz        |        N/A        |      Closed       |
   |--------------------+-------------------+-------------------|
   |       50iMHz       |       Open        |        N/A        |
   |--------------------+-------------------+-------------------|
   |       66iMHz       |        N/A        |       Open        |
   +------------------------------------------------------------+