...because we can't all be on the bleeding edge...





486/MT

DELL COMPUTER CORPORATION

486/MT

Processor

80486SX/80486SX2/80486DX/80486DX2/80486DX4

Processor Speed

25/33/50(internal)/66(internal)/100(internal)MHz

Chip Set

OPTI

Max. Onboard DRAM

64MB

Cache

128/256KB

BIOS

Phoenix

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), VGA feature connector, VGA port

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

PS/2 mouse port

CN1

VGA port

CN8

Serial port 1

CN2

VGA feature connector

CN9

Serial port 2

CN3

Reset switch

J1

External battery

CN4

Power LED & keylock

J2

Parallel port

CN5

Speaker

J3

IDE interface

CN6

IDE interface LED

J4

Floppy drive interface

CN7

32-bit VESA Local bus slots

SL1 & SL2

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

On board VGA enabled

JP1

Open

 

On board VGA disabled

JP1

Closed

RAMDAC shadow disabled

JP2

Open

 

RAMDAC shadow enabled

JP2

Closed

Factory configured - do not alter

JP3

Open

Factory configured - do not alter

JP4

Closed

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

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

(1) 32K x 8

CACHE JUMPER CONFIGURATION

Size

JP8

JP9

JP12

128KB

pins 1 & 2 closed

pins 1 & 2 closed

Open

256KB

pins 2 & 3 closed

pins 2 & 3 closed

Closed

CPU TYPE CONFIGURATION

Type

JP10

JP13

JP14

JP15

80486SX

Closed

Open

Open

pins 2 & 3 closed

80486SX2

Closed

Closed

Open

pins 2 & 3 closed

80486DX

Closed

Closed

pins 1 & 2 closed

pins 1 & 2 closed

80486DX2

Closed

Closed

pins 1 & 2 closed

pins 1 & 2 closed

80486DX4

Closed

Closed

pins 1 & 2 closed

pins 1 & 2 closed

CPU SPEED CONFIGURATION

Speed

JP5

JP6

JP7

25MHz

Closed

Open

Closed

33MHz

Open

Closed

Closed

50iMHz

Closed

Open

Closed

66iMHz

Open

Closed

Closed

100iMHz

Open

Closed

Closed

VIDEO MEMORY CONFIGURATION

Size

Bank 0

Bank 1

512KB

(4) 256K x 4

NONE

1MB

(4) 256K x 4

(4) 256K x 4

Note: Bank 0 is factory installed and is not configurable.