COMPAQ COMPUTER CORPORATION

DESKPRO EP (2 DIMM)

Device Type

Mainboard

Processor

Pentium II/Celeron

Processor Speed

233/266/300/333/366/400/450/500MHz

Chip Set

Intel 440BX/PIIX-4E or 440EX/PIIX-4E

Video Chip Set

None

Maximum Onboard Memory

256MB (SDRAM supported)

Maximum Video Memory

None

Cache

512KB (located on Pentium II CPU)

BIOS

Unidentified

Dimensions

305mm x 244mm

I/O Options

32-bit PCI slots (3), floppy drive interface, IDE interfaces (2), serial ports (2), parallel port, PS/2 mouse port, USB connectors (2), ATX power connector, AGP slot

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

AGP slot

AGP

Auxiliary LED

CR114

ATX power connector

ATX

Power switch & LED

P5

Serial port

CN1

Chassis fan power

P8

Serial port

CN2

Wake on LAN connector

P9

Parallel port

CN3

Floppy drive interface

P10

PS/2 mouse port

CN4

IDE interface 1

P20

USB connector

CN5

IDE interface 2

P21

USB connector

CN6

32-bit PCI slots

PC1 – PC4

USER CONFIGURABLE SETTINGS

Function

Label

Position

»

CMOS memory normal operation

E50

Pins 1 & 2 closed

 

CMOS memory clear

E50

Pins 2 & 3 closed

»

Password enabled

SW1/1

Off

 

Password disabled

SW1/1

On

 

Auxiliary power supply enabled, main power supply disabled

SW1/6

Off

 

Auxiliary & main power supply enabled

SW1/6

On

DIMM CONFIGURATION

Size

Bank 0

Bank 1

8MB

(1) 1M x 64

None

16MB

(1) 2M x 64

None

16MB

(1) 1M x 64

(1) 1M x 64

24MB

(1) 2M x 64

(1) 1M x 64

32MB

(1) 4M x 64

None

32MB

(1) 2M x 64

(1) 2M x 64

40MB

(1) 4M x 64

(1) 1M x 64

48MB

(1) 4M x 64

(1) 2M x 64

64MB

(1) 8M x 64

None

64MB

(1) 4M x 64

(1) 4M x 64

72MB

(1) 8M x 64

(1) 1M x 64

80MB

(1) 8M x 64

(1) 2M x 64

128MB

(1) 16M x 64

None

128MB

(1) 8M x 64

(1) 8M x 64

136MB

(1) 16M x 64

(1) 1M x 64

144MB

(1) 16M x 64

(1) 2M x 64

160MB

(1) 16M x 64

(1) 4M x 64

256MB

(1) 16M x 64

(1) 16M x 64

Note: Board accepts SDRAM memory.

CACHE CONFIGURATION

Note: 512KB cache is located on the Pentium II CPU.

CPU SPEED SELECTION

CPU speed

Clock speed

Multiplier

SW1/2

SW1/3

SW1/4

SW1/5

233MHz

66MHz

3.5x

Off

Off

On

On

266MHz

66MHz

4x

On

On

Off

On

300MHz

66MHz

4.5x

On

Off

Off

On

333MHz

66MHz

5x

Off

On

Off

On

350MHz

100MHz

3.5x

Off

Off

On

On

400MHz

100MHz

4x

On

On

Off

On

450MHz

100MHz

4.5x

On

Off

Off

On

500MHz

100MHz

5x

Off

On

Off

On