ASUS COMPUTER INTERNATIONAL

P2B-N (REV. 1.03)

Device Type

Mainboard

Processor

Pentium II/Celeron

Processor Speed

233/266/300/333/350/366/400/450MHz

Chip Set

Intel 440LX/EX

Video Chip Set

ATI

Maximum Onboard Memory

512MB (EDO, SDRAM & PC100 supported)

Maximum Video Memory

8MB

Audio Chip Set

ESS

Cache

0/128/256/512KB (located on the CPU)

BIOS

Unidentified

Dimensions

305mm x 244mm

I/O Options (backplane)

CD-ROM interface, Ethernet 10BaseT connector, game/MIDI port, PS/2 mouse port, serial ports (2), VGA port, riser slot

I/O Options (riser card)

32-bit PCI slots (2), USB connectors (2), ATX power connector, microphone in, IR connector, wake on LAN connector

CONNECTIONS

Purpose

Location

Purpose

Location

Chassis fan power

C1

PS/2 mouse port

CN4

CPU fan power

C2

Ethernet 10BaseT connector

CN5

CPU thermal sensor

C3

LAN LED

CN6

Modem connector

C4

VGA port

CN7

Jack connector

C5

Game/MIDI port

CN8

Parallel port

CN1

CD-ROM connector

CN9

Serial port 1

CN2

AMC connector

CN10

Serial port 2

CN3

 

 


USER CONFIGURABLE SETTINGS

Function

Label

Position

»

On board audio enabled

AUD

Pins 2 & 3 closed

 

On board audio disabled

AUD

Pins 1 & 2 closed

»

Keyboard power on disabled

KBD

Pins 1 & 2 closed

 

Keyboard power on enabled

KBD

Pins 2 & 3 closed

»

On board LAN enabled

LAN

Pins 2 & 3 closed

 

On board LAN disabled

LAN

Pins 1 & 2 closed

»

CMOS memory normal operation

RTC

Open

 

CMOS memory clear

RTC

Closed

»

Voltage select normal

VIO

Pins 2 & 3 closed

 

Voltage select high

VIO

Pins 1 & 2 closed


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

96MB

(1) 8M x 64

(1) 4M x 64

128MB

(1) 8M x 64

(1) 8M x 64

128MB

(1) 16M x 64

None

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


DIMM CONFIGURATION (CON'T)

Size

Bank 0

Bank 1

192MB

(1) 16M x 64

(1) 8M x 64

256MB

(1) 16M x 64

(1) 16M x 64

256MB

(1) 32M x 64

None

264MB

(1) 32M x 64

(1) 1M x 64

272MB

(1) 32M x 64

(1) 2M x 64

288MB

(1) 32M x 64

(1) 4M x 64

320MB

(1) 32M x 64

(1) 8M x 64

384MB

(1) 32M x 64

(1) 16M x 64

512MB

(1) 32M x 64

(1) 32M x 64

Note: Board accepts EDO, SDRAM & PC100 memory.


CPU SPEED SELECTION (PENTIUM II)

CPU speed

Clock speed

Multiplier

FS0

FS1

FS2

350MHz

100MHz

3.5x

1 & 2

1 & 2

1 & 2

400MHz

100MHz

4x

1 & 2

1 & 2

1 & 2

450MHz

100MHz

4.5x

1 & 2

1 & 2

1 & 2

Note: Pins designated should be in the closed position.


CPU SPEED SELECTION (PENTIUM II, CON'T)

CPU speed

Clock speed

Multiplier

BF0

BF1

BF2

BF3

350MHz

100MHz

3.5x

1 & 2

1 & 2

2 & 3

2 & 3

400MHz

100MHz

4x

2 & 3

2 & 3

1 & 2

2 & 3

450MHz

100MHz

4.5x

1 & 2

2 & 3

1 & 2

2 & 3

Note: Pins designated should be in the closed position.


CPU SPEED SELECTION (PENTIUM II/CELERON)

CPU speed

Clock speed

Multiplier

FS0

FS1

FS2

266MHz

66MHz

4x

1 & 2

1 & 2

2 & 3

300MHz

66MHz

4.5x

1 & 2

1 & 2

2 & 3

333MHz

66MHz

5x

1 & 2

1 & 2

2 & 3

Note: Pins designated should be in the closed position.


CPU SPEED SELECTION (PENTIUM II/CELERON, CON'T)

CPU speed

Clock speed

Multiplier

BF0

BF1

BF2

BF3

266MHz

66MHz

4x

1 & 2

1 & 2

2 & 3

2 & 3

300MHz

66MHz

4.5x

2 & 3

2 & 3

1 & 2

2 & 3

333MHz

66MHz

5x

1 & 2

2 & 3

1 & 2

2 & 3

Note: Pins designated should be in the closed position.


CACHE CONFIGURATION

Note: 256KB/512KB cache is located on the Pentium II CPU. 128KB cache is located on the Celeron 300A & 333 CPU.


VIDEO MEMORY CONFIGURATION

Note: Board is factory installed with 4MB of video memory. To increase the memory, install chips in bank 1.

CONNECTIONS

Purpose

Location

Purpose

Location

ATX power connector

ATX

IDE interface

CN2

LAN LED

C1

IR connector

CN3

Wake on LAN connector

C2

USB connector 1

CN4

Front panel connector

C3

USB connector 2

CN5

Microphone in

C4

Riser slot

SL1

Floppy drive interface

CN1

32-bit PCI slots

PC1 - PC2