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System 4XXDE

DELL COMPUTER CORPORATION

System 4XXDE

Processor

80486SX/80487SX/80486DX

Processor Speed

20/25/33/50MHz

Chip Set

VLSI

Max. Onboard DRAM

48MB (96MB on revision 1.1 or higher)

Cache

None (128KB on 450DE and 433DE)

BIOS

AMI

Dimensions

329mm x 334mm

I/O Options

32-bit external CPU card slot, bus mouse, floppy drive interface, IDE interface, status LCD, parallel port, serial ports (2), VGA port

NPU Options

None (4167 on 433DE)

CONNECTIONS

Purpose

Location

Purpose

Location

VGA port

CN1

External battery

JBAT

Parallel port

CN2

Cooling fan

JFAN

Serial port 2

CN3

VGA pass-through

JFEAT

Serial port 1

CN4

Primary floppy drive interface

JFLOP

Bus mouse port

CN5

IDE interface

JIDE

Board ground points

GND

Front panel status LCD

JVIEW

IDE interface LED

JLED

Reset switch

RSET

USER CONFIGURABLE SETTINGS

Function

Jumper/Switch

Position

»

Boot EEPROM write/clear enabled

BOOT

Closed

 

Boot EEPROM write/clear disabled

BOOT

Open

»

Factory test disabled

MNT

Open

 

Factory test enabled

MNT

Closed

»

VGA interface enabled

SW1/1

Off

 

VGA interface disabled

SW1/1

On

»

Monitor type select fixed frequency

SW1/2

Off

 

Monitor type select multi frequency

SW1/2

On

»

Password check enabled

SW1/3

On

 

Password check disabled

SW1/3

Off

»

BIOS chip select flash EEPROM

SW1/4

Off

 

BIOS chip select auxiliary ROM

SW1/4

On

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

Bank 4

Bank 5

4MB

(1)512K x 36

(1)512K x 36

NONE

NONE

NONE

NONE

6MB

(1)512K x 36

(1)512K x 36

(1)256K x 36

(1)256K x 36

NONE

NONE

6MB

(1)256K x 36

(1)256K x 36

(1)256K x 36

(1)256K x 36

(1)256K x 36

(1)256K x 36

8MB

(1)512K x 36

(1)512K x 36

(1)256K x 36

(1)256K x 36

(1)256K x 36

(1)256K x 36

8MB

(1)512K x 36

(1)512K x 36

(1)512K x 36

(1)512K x 36

NONE

NONE

8MB

(1) 1M x 36

(1) 1M x 36

NONE

NONE

NONE

NONE

10MB

(1)512K x 36

(1)512K x 36

(1)512K x 36

(1)512K x 36

(1)256K x 36

(1)256K x 36

10MB

(1) 1M x 36

(1) 1M x 36

(1)256K x 36

(1)256K x 36

NONE

NONE

12MB

(1) 1M x 36

(1) 1M x 36

(1)256K x 36

(1)256K x 36

(1)256K x 36

(1)256K x 36

12MB

(1) 1M x 36

(1) 1M x 36

(1)512K x 36

(1)512K x 36

NONE

NONE

12MB

(1)512K x 36

(1)512K x 36

(1)512K x 36

(1)512K x 36

(1)512K x 36

(1)512K x 36

14MB

(1) 1M x 36

(1) 1M x 36

(1)512K x 36

(1)512K x 36

(1)256K x 36

(1)256K x 36

16MB

(1) 1M x 36

(1) 1M x 36

(1)512K x 36

(1)512K x 36

(1)512K x 36

(1)512K x 36

16MB

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

NONE

NONE

16MB

(1) 2M x 36

(1) 2M x 36

NONE

NONE

NONE

NONE

18MB

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

(1)256K x 36

(1)256K x 36

18MB

(1) 2M x 36

(1) 2M x 36

(1)256K x 36

(1)256K x 36

NONE

NONE

20MB

(1) 2M x 36

(1) 2M x 36

(1)256K x 36

(1)256K x 36

(1)256K x 36

(1)256K x 36

DRAM CONFIGURATION (CON’T)

Size

Bank 0

Bank 1

Bank 2

Bank 3

Bank 4

Bank 5

20MB

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

(1)512K x 36

(1)512K x 36

20MB

(1) 2M x 36

(1) 2M x 36

(1)512K x 36

(1)512K x 36

NONE

NONE

22MB

(1) 2M x 36

(1) 2M x 36

(1)512K x 36

(1)512K x 36

(1)256K x 36

(1)256K x 36

24MB

(1) 2M x 36

(1) 2M x 36

(1) 1M x 36

(1) 1M x 36

NONE

NONE

24MB

(1) 2M x 36

(1) 2M x 36

(1)512K x 36

(1)512K x 36

(1)512K x 36

(1)512K x 36

26MB

(1) 2M x 36

(1) 2M x 36

(1) 1M x 36

(1) 1M x 36

(1)256K x 36

(1)256K x 36

28MB

(1) 2M x 36

(1) 2M x 36

(1) 1M x 36

(1) 1M x 36

(1)512K x 36

(1)512K x 36

32MB

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

NONE

NONE

32MB

(1) 2M x 36

(1) 2M x 36

(1) 1M 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

NONE

NONE

34MB

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

(1)256K x 36

(1)256K x 36

34MB

(1) 4M x 36

(1) 4M x 36

(1)256K x 36

(1)256K x 36

NONE

NONE

36MB

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

(1)512K x 36

(1)512K x 36

38MB

(1) 4M x 36

(1) 4M x 36

(1)512K x 36

(1)512K x 36

(1)256K x 36

(1)256K x 36

40MB

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

(1) 1M x 36

(1) 1M x 36

40MB

(1) 4M x 36

(1) 4M x 36

(1) 1M x 36

(1) 1M x 36

NONE

NONE

42MB

(1) 4M x 36

(1) 4M x 36

(1) 1M x 36

(1) 1M x 36

(1)256K x 36

(1)256K x 36

48MB

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

48MB

(1) 4M x 36

(1) 4M x 36

(1) 2M x 36

(1) 2M x 36

NONE

NONE

50MB

(1) 4M x 36

(1) 4M x 36

(1) 2M x 36

(1) 2M x 36

(1)256K x 36

(1)256K x 36

52MB

(1) 4M x 36

(1) 4M x 36

(1) 2M x 36

(1) 2M x 36

(1)512K x 36

(1)512K x 36

56MB

(1) 4M x 36

(1) 4M x 36

(1) 2M x 36

(1) 2M x 36

(1) 1M x 36

(1) 1M x 36

64MB

(1) 4M x 36

(1) 4M x 36

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

64MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

NONE

NONE

66MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

(1)256K x 36

(1)256K x 36

68MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

(1)512K x 36

(1)512K x 36

72MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

(1) 1M x 36

(1) 1M x 36

80MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

(1) 2M x 36

(1) 2M x 36

96MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36