DELL COMPUTER CORPORATION

MIDSIZE 486 ISA/VL SYSTEMS

Processor       80486SX/80486SX2/80486DX2/80486DX4
Processor Speed 25/33/50(internal)/66(internal)/100(internal)MHz
Chip Set        VLSI
Video Chip Set  None
Maximum Onboard 64MB
Memory
Maximum Video   None
Memory
Cache           128KB
BIOS            Unidentified
Dimensions      330mm x 218mm
I/O Options     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
NPU Options     None

[Image]

                                CONNECTIONS

  Purpose                  Location    Purpose                  Location

  External battery           BATT      IDE interface              CN7

  PS/2 mouse port            CN1       Floppy drive               CN8
                                       interface

  Serial port 1              CN2       IDE interface LED          CN9

  Serial port 2              CN3       Front panel connector     PANEL

  Parallel port              CN4       Riser slot                 SL1

  VGA port                   CN5       32-bit VESA local bus      SL2
                                       slot

  Feature connector          CN6       Speaker                    SPKR

                        USER CONFIGURABLE SETTINGS

                Function                     Label           Position

  »   Factory configured - do not             CDR              Open
      alter

  »   Password enabled                        EPWD            Closed

      Password disabled                       EPWD             Open

  »   On board video enabled                  EVGA            Closed

      On board video disabled                 EVGA             Open

  »   Factory configured - do not            IDEIRQ         Pins 1 & 2
      alter                                                   closed

  »   Factory configured - do not            IDERDY            Open
      alter

  »   On board speaker enabled                SPKR          Pins 1 & 2
                                                              closed

      On board speaker disabled               SPKR             Open

             DRAM CONFIGURATION

     Size          Bank 0        Bank 1

      4MB        (1) 1M x 36      None

      8MB        (1) 1M x 36   (1) 1M x 36

      8MB        (1) 2M x 36      None

     12MB        (1) 1M x 36   (1) 2M x 36

     16MB        (1) 2M x 36   (1) 2M x 36

     16MB        (1) 4M x 36      None

     20MB        (1) 4M x 36   (1) 1M x 36

     24MB        (1) 4M x 36   (1) 2M x 36

     32MB        (1) 4M x 36   (1) 4M x 36

     32MB        (1) 8M x 36      None

     36MB        (1) 1M x 36   (1) 8M x 36

     40MB        (1) 8M x 36   (1) 2M x 36

     48MB        (1) 4M x 36   (1) 8M x 36

     64MB        (1) 8M x 36   (1) 8M x 36

  Note: Board also accepts x 32 SIMMs.

                      CACHE CONFIGURATION

      Size          Bank 0            TAG          U55/U57

     128KB        (4) 32K x 8    Unidentified    Unidentified

  Note: The size of TAG chip and U55/U57 are unidentified.

  CPU SPEED SELECTION

   Speed       SPEED

   25MHz       Closed

   33MHz        Open

   50iMHz      Closed

   66iMHz       Open

  100iMHz       Open