DELL COMPUTER CORPORATION

SYSTEM 486/L

Processor         80486SX/80487SX/80486DX/80486DX2
Processor Speed   25/33/50(internal)/66(internal)MHz
Chip Set          LSI
Max. Onboard DRAM 64MB (on external card)
Cache             128KB
BIOS              Phoenix
Dimensions        330mm x 218mm
I/O Options       External cache card, floppy drive interface, IDE
                  interface, parallel port, PS/2 mouse port, serial ports
                  (2), VGA feature connector, VGA port
NPU Options       None

[Image]

                                CONNECTIONS

  Purpose                 Location     Purpose                 Location

  PS/2 mouse port           CN1        Floppy drive               CN7
                                       interface

  Serial port 1             CN2        Video memory               CN8
                                       upgrade connector

  Serial port 2             CN3        VGA feature                CN9
                                       connector

  Parallel port             CN4        IDE interface LED          J11

  VGA port                  CN5        External cache card        SL1

  IDE interface             CN6

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

  »   Password enabled                         J1             Closed

      Password disabled                        J1              Open

  »   Factory configured - do not              J2              Open
      alter

  »   Flash BIOS write protect enabled         J3             Closed

      Flash BIOS write protect                 J3              Open
      disabled

  »   On board VGA enabled                     J4             Closed

      On board VGA disabled                    J4              Open

  »   External cache card not                  J5             Closed
      installed

      External cache card installed            J5              Open

  »   Factory configured - do not              J6              Open
      alter

  »   Factory configured - do not              J9              Open
      alter

  »   Factory configured - do not             J10              Open
      alter

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

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

     28MB       (1) 4M x 36   (1) 1M x 36    (1) 1M x 36    (1) 1M x 36

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

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

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

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

     52MB       (1) 4M x 36   (1) 4M x 36    (1) 4M x 36    (1) 1M x 36

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

   CPU SPEED CONFIGURATION

  Speed       J7        J8

  25MHz      Open     Closed

  33MHz     Closed     Open

  50iMHz     Open     Closed

  66iMHz    Closed     Open