
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

