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