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SYSTEM 40XX/XE

DELL COMPUTER CORPORATION

SYSTEM 40XX/XE

Processor

80486DX/80486DX2

Processor Speed

33/50(internal)/66(internal)MHz

Chip Set

Intel

Video Chip Set

Unidentified

Maximum Onboard Memory

128MB

Maximum Video Memory

1MB

Cache

Unidentified

BIOS

Unidentified

Dimensions

330mm x 218mm

I/O Options

Floppy drive interface, IDE interface, parallel port, PS/2 mouse port, serial ports (2), feature connector, VGA port, riser slot, cache slot

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

Feature connector

CN1

External battery

JBAT

PS/2 mouse port

CN2

Front panel connector

JCTRL

Serial port 2

CN3

IDE interface LED

JLED

Serial port 1

CN4

Power staging connector (out)

PROUT

Parallel port

CN5

Power staging connector (in)

PWRIN

VGA port

CN6

Riser slot

SL1

IDE interface

CN7

Cache slot

SL2

Floppy drive interface

CN8

   

USER CONFIGURABLE SETTINGS

Function

Label

Position

Factory configured - do not alter

30MHZ

Unidentified

AT ROM card disabled

ATRM

Open

 

AT ROM card enabled

ATRM

Closed

System/video BIOS normal operation

CLRB

Open

 

System/video BIOS clear

CLRB

Closed

Flash BIOS normal operation

CLRE

Open

 

Flash BIOS clear

CLRE

Closed

Factory configured - do not alter

CN9

Unidentified

Flash BIOS upgradable with a diskette

EFLU

Closed

 

Flash BIOS not upgradable with a diskette

EFLU

Open

Password enabled

EPWD

Closed

 

Password disabled

EPWD

Open

On board video enabled

EVGA

Closed

 

On board video disabled

EVGA

Open

I/O controller address select 26Eh - 26Fh

IOALT

Open

 

I/O controller address select 398h - 398Fh

IOALT

Closed

Factory configured - do not alter

J1

Unidentified

Factory configured - do not alter

J2

Unidentified

Factory configured - do not alter

J3

Unidentified

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

4MB

(1) 512K x 36

(1) 512K x 36

None

None

6MB

(1) 1M x 36

(1) 512K x 36

None

None

8MB

(1) 1M x 36

(1) 1M x 36

None

None

12MB

(1) 1M x 36

(1) 1M x 36

(1) 512K x 36

(1) 512K x 36

16MB

(1) 2M x 36

(1) 2M x 36

None

None

16MB

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

20MB

(1) 2M x 36

(1) 2M x 36

(1) 512K x 36

(1) 512K x 36

24MB

(1) 2M x 36

(1) 2M x 36

(1) 1M x 36

(1) 1M x 36

DRAM CONFIGURATION (CONT)

Size

Bank 0

Bank 1

Bank 2

Bank 3

32MB

(1) 4M x 36

(1) 4M x 36

None

None

32MB

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

36MB

(1) 4M x 36

(1) 4M x 36

(1) 512K x 36

(1) 512K x 36

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) 2M x 36

(1) 2M x 36

64MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

64MB

(1) 8M x 36

(1) 8M x 36

None

None

68MB

(1) 8M x 36

(1) 8M x 36

(1) 512K x 36

(1) 512K x 36

72MB

(1) 8M x 36

(1) 8M x 36

(1) 1M x 36

(1) 1M x 36

80MB

(1) 8M x 36

(1) 8M x 36

(1) 2M x 36

(1) 2M x 36

96MB

(1) 8M x 36

(1) 8M x 36

(1) 4M x 36

(1) 4M x 36

128MB

(1) 8M x 36

(1) 8M x 36

(1) 8M x 36

(1) 8M x 36

Note: The location of banks 0, 1, 2 & 3 are unidentified.

CACHE CONFIGURATION

Note: The size of the cache modules are unidentified.

VIDEO MEMORY CONFIGURATION

Size

Bank 0

Bank 1

512KB

512KB

None

1MB

512KB

512KB

Note: The location of banks 0 & 1 are unidentified. The size of the chips are unidentified.

CPU SPEED SELECTION

Speed

25MHZ

33MHZ

33MHz

Open

Closed

50iMHz

Closed

Open

66iMHz

Open

Closed