DELL COMPUTER CORPORATION

XPS 486 MIDSIZE VER. 2

Processor          80486DX2
Processor Speed    50(internal)/66(internal)MHz
Chip Set           Micronics
Max. Onboard DRAM  64MB
Cache              128/256KB
BIOS               AMI
Dimensions         330mm x 218mm
I/O Options        32-bit VESA local bus slots (2), floppy drive
                   interface, IDE interface, parallel port, PS/2 mouse
                   port, serial ports (2)
NPU Options        None

[Image]

                                CONNECTIONS

  Purpose                  Location    Purpose                  Location

  External battery           CN1       Serial port 2              J16

  PS/2 mouse port            CN2       Speaker                    J33

  IDE interface              CN3       Power LED & keylock        J34

  Floppy drive               CN4       IDE interface LED          W11
  interface

  Serial port 1              J12       Reset switch               W12

  Parallel port              J15       32-bit VESA local bus   SL1 & SL2
                                       slots

                        USER CONFIGURABLE SETTINGS

                 Function                     Jumper         Position

  »   Factory configured - do not alter         W1             Open

  »   Parallel port bidirectional               W5           pins 1 & 2
                                                              closed

      Parallel port unidirectional              W5           pins 2 & 3
      (printer)                                               closed

  »   Monitor type select color                 W6            Closed

      Monitor type select monochrome            W6             Open

  »   Factory configured - do not alter         W7            Closed

  »   Factory configured - do not alter         W8           pins 1 & 2
                                                              closed

  »   Factory configured - do not alter        W20           pins 1 & 2
                                                              closed

  »   Factory configured - do not alter        W31             Open

  »   Factory configured - do not alter        W40           pins 1 & 2
                                                              closed

  »   Factory configured - do not alter        W70           pins 1 & 2
                                                              closed

  »   Factory configured - do not alter        W71             Open

  Note: The location of the factory configured jumpers is unknown.

                           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 36       NONE

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

     16MB       (1) 4M x 36       NONE           NONE          NONE

     20MB       (1) 1M x 36   (1) 4M x 36        NONE          NONE

     24MB       (1) 1M x 36   (1) 1M x 36    (1) 4M x 36       NONE

     32MB       (1) 4M x 36   (1) 4M x 36        NONE          NONE

     36MB       (1) 1M x 36   (1) 4M x 36    (1) 4M x 36       NONE

     40MB       (1) 1M x 36   (1) 1M x 36    (1) 4M x 36    (1) 4M x 36

     48MB       (1) 4M x 36   (1) 4M x 36    (1) 4M x 36       NONE

     64MB       (1) 4M x 36   (1) 4M x 36    (1) 4M x 36    (1) 4M x 36

                    CACHE CONFIGURATION

     Size          Bank 0         Bank 1          TAG

     128KB      (4) 32K x 8        NONE       (1) 8K x 8

     256KB      (4) 32K x 8    (4) 32K x 8       NONE

                 CACHE JUMPER CONFIGURATION

   Size       W64       W65       W66       W67       W68

  128KB      2 & 3     1 & 2     1 & 2     1 & 2     2 & 3

  256KB      2 & 3     2 & 3     2 & 3     2 & 3     2 & 3

  Note: Pins designated should be in the closed position.

             CPU SPEED CONFIGURATION

  Speed     SW1/1     SW1/2    SW1/3     SW1/4

  50iMHz     On        On        On        On

  66iMHz     Off       Off      Off       Off