COMPAQ COMPUTER CORPORATION

PROFESSIONAL WORKSTATION AP400
Device Type Mainboard
Processor Pentium II
Processor Speed 350/400/450MHz
Chip Set Unidentified
Maximum Onboard Memory 1GB (SDRAM supported)
Audio Chip Set Unidentified
Cache 256/512KB (located on Pentium II CPU)
BIOS Unidentified
Dimensions 254mm x 218mm
I/O Options Ethernet 10BaseT connector, floppy drive interface, IDE interfaces (2), external SCSI interface, Wide Ultra SCSI interface, parallel port, PS/2 mouse port, serial ports (2), VRM connectors (2), USB connectors (2), ATX power connector, AGP slot, line in, line out, microphone in


 

CONNECTIONS
Purpose

Location

 Purpose

Location
AGP slot

AGP

 PS/2 mouse port

CN8
ATX power connector

ATX

 Line in

CN9
Soft off power supply/LED

C1

 Headphone in

CN10
Speaker

C2

 Microphone in

CN11
USB connector 1

CN1

 Line out

CN12
USB connector 2

CN2

 Floppy drive interface

CN13
Ethernet 10BaseT connector

CN3

 IDE interface 2

CN14
Parallel port

CN4

 IDE interface 1

CN15
External SCSI interface

CN5

 Ultra Wide SCSI interface

CN16
Serial port 2

CN6

 VRM connector

VRM1
Serial port 1

CN7

 VRM connector

VRM2


USER CONFIGURABLE SETTINGS

Function

Label

Position

»

 Password enabled

SW1/1

Off
  Password disabled

SW1/1

On


DIMM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

8MB

(1) 1M x 64

None

None

None

16MB

(1) 2M x 64

None

None

None

16MB

(1) 1M x 64

(1) 1M x 64

None

None

24MB

(1) 2M x 64

(1) 1M x 64

None

None

24MB

(1) 1M x 64

(1) 1M x 64

(1) 1M x 64

None

32MB

(1) 4M x 64

None

None

None

32MB

(1) 2M x 64

(1) 2M x 64

None

None

32MB

(1) 1M x 64

(1) 1M x 64

(1) 1M x 64

(1) 1M x 64

40MB

(1) 4M x 64

(1) 1M x 64

None

None

48MB

(1) 4M x 64

(1) 2M x 64

None

None

48MB

(1) 2M x 64

(1) 2M x 64

(1) 2M x 64

None

64MB

(1) 2M x 64

(1) 2M x 64

(1) 2M x 64

(1) 2M x 64

64MB

(1) 8M x 64

None

None

None

64MB

(1) 4M x 64

(1) 4M x 64

None

None

72MB

(1) 8M x 64

(1) 1M x 64

None

None

80MB

(1) 8M x 64

(1) 2M x 64

None

None

96MB

(1) 8M x 64

(1) 4M x 64

None

None

96MB

(1) 4M x 64

(1) 4M x 64

(1) 4M x 64

None

128MB

(1) 16M x 64

None

None

None

128MB

(1) 8M x 64

(1) 8M x 64

None

None

128MB

(1) 4M x 64

(1) 4M x 64

(1) 4M x 64

(1) 4M x 64

136MB

(1) 16M x 64

(1) 1M x 64

None

None

144MB

(1) 16M x 64

(1) 2M x 64

None

None

176MB

(1) 16M x 64

(1) 2M x 64

(1) 2M x 64

(1) 2M x 64

192MB

(1) 16M x 64

(1) 8M x 64

None

None

192MB

(1) 8M x 64

(1) 8M x 64

(1) 8M x 64

None

256MB

(1) 32M x 64

None

None

None

256MB

(1) 16M x 64

(1) 16M x 64

None

None

256MB

(1) 8M x 64

(1) 8M x 64

(1) 8M x 64

(1) 8M x 64

272MB

(1) 16M x 64

(1) 16M x 64

(1) 1M x 64

(1) 1M x 64

280MB

(1) 32M x 64

(1) 1M x 64

(1) 1M x 64

(1) 1M x 64

288MB

(1) 16M x 64

(1) 16M x 64

(1) 2M x 64

(1) 2M x 64

320MB

(1) 16M x 64

(1) 16M x 64

(1) 4M x 64

(1) 4M x 64

384MB

(1) 16M x 64

(1) 16M x 64

(1) 16M x 64

None

448MB

(1) 32M x 64

(1) 8M x 64

(1) 8M x 64

(1) 8M x 64

512MB

(1) 32M x 64

(1) 32M x 64

None

None

512MB

(1) 16M x 64

(1) 16M x 64

(1) 16M x 64

(1) 16M x 64

640MB

(1) 32M x 64

(1) 16M x 64

(1) 16M x 64

(1) 16M x 64

768MB

(1) 32M x 64

(1) 32M x 64

(1) 32M x 64

None

1024MB

(1) 32M x 64

(1) 32M x 64

(1) 32M x 64

(1) 32M x 64
Note: Board accepts SDRAM memory.


CACHE CONFIGURATION
Note: 256KB/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

SW1/6

350MHz

100MHz

3.5x

On

Off

Off

Off

Off

400MHz

100MHz

4x

Off

On

On

Off

Off

450MHz

100MHz

4.5x

Off

On

Off

Off

Off


BATTERY SELECTION

Size

J5

Internal

Pins 6 & 7 closed

External

Pins 1 – 4 closed

External jumper

Pins 5 & 6 closed