
R-01-02-081003
6BXU
USER'S MANUAL
1. System power on by PS/2 Mouse: First, enable this function
in CMOS Setup, then you can power on the system by double
clicking the right or left button of your PS/2 Mouse.
2. System power on by Keyboard: If your ATX power supply
supports larger than 100~300 mA 5V Stand-By current (rest
with keyboard require), you can power on your system by
entering password from the Keyboard after setting the
“Keyboard power on” jumper (JP1) and password in CMOS
Setup.
3. Modem Ring-On on COM B.
4. Wake-up on LAN supports (Your ATX power supply must
support larger than 720 mA 5V Stand-By current).
5. Support 3 steps ACPI LED.
6. Support LDCM
Pentium II Processor MAINBOARD

6BXU
1
The author assumes no responsibility for any errors or omissions that may
appear in this document nor does it make a commitment to update the
information contained herein.
Third-party brands and names are the property of their respective owners.
Sound Blaster is a registered trademark of Creative Technology Ltd in the
United States and certain other countries. Sound Blaster-LINK and SB-LINK
are trademarks of Creative Technology Ltd.
Oct 03, 1998 Taipei, Taiwan

Quick Installation Guide
2
I. Quick Installation Guide :
CPU SPEED SETUP
The system bus speed can be selectable between 66 MHz and 100MHz. The
user can select the system bus speed (JP5) and change the DIP SWITCH (SW)
selection to set up the CPU speed for 200 - 633MHz processor.
M
The CPU speed must match with the frequency RATIO. It will cause
system hanging up if the frequency RATIO is higher than CPU's.
DIP SWITCH (SW)
FREQ. RATIO
1 2 3 4
X 3
ON OFF ON ON
X 3.5
OFF OFF ON ON
X 4
ON ON OFF ON
X 4.5
OFF ON OFF ON
X 5
ON OFF OFF ON
X 5.5
OFF OFF OFF ON
MJP5 (Select the system speed between 66 Hz and 100MHz)
1-2 Close
Set system speed to 66MHz
−
system always
run at 66MHz FSB (Front Side Bus).
2-3 Close
Set system speed to Auto
−
auto detect system
speed (66/ 100MHz FSB)
1-2-3 Open
Set system speed to 100MHz
−
system always
run at 100MHz FSB (Front Side Bus).

6BXU
3
MThere are two ways to set system speed
A. 66MHz forced (JP5 1-2 short) or Auto detect (2-3 short)
B. 100MHz forced (JP5 1-2-3 open) or Auto detect (2-3 short)
1. Pentium II 300 / 100MHz FSB
6BXU
BIOS
INTEL
443BX
PIIX4
Adaptec
AIC-7890
ON
1 2 3 4
CPU
JP5
1 2 3
JP5
1 2 3
OFF
2. Pentium II 350 / 100 MHz FSB
3. Pentium II 400 / 100 MHz FSB
SW
ON
OFF
JP5
1 2 3
JP5
1 2 3
SW
ON

Quick Installation Guide
4
4. Pentium II 450 / 100 MHz FSB
5. Pentium II 500 / 100 MHz FSB
6. Pentium II 550 / 100 MHz FSB
7. Pentium II 233 / 66 MHz FSB
8. Pentium II 266 / 66 MHz FSB
SW
ON
OFF
JP5
1 2 3
JP5
1 2 3
SW
ON
1 2 3 4
OFF
JP5
1 2 3
JP5
1 2 3
SW
ON
1 2 3 4
OFF
JP5
1 2 3
JP5
1 2 3
SW
ON
OFF
JP5
1 2 3
JP5
1 2 3
SW
ON

6BXU
5
9. Pentium II 300 / 66 MHz FSB
10. Pentium II 333 / 66 MHz FSB
11. Pentium II 366 / 66 MHz FSB
F
For 133MHz Jumper Setting:
6BXU
BIOS
INTEL
443BX
PIIX4
Adaptec
AIC-7890
CPU
JP5
1 2 3
JP4
«
Note: We don’ t recommend you to setup your system speed to 133MHz
because this frequencies is not the standard specifications for
CPU, Chipset and most of the peripherals. Whether your system
can run under 133MHz properly will depend on your hardware
configurations: CPU, SDRAM, Cards, etc.
SW
ON
OFF
JP5
1 2 3
JP5
1 2 3
SW
ON
OFF
JP5
1 2 3
JP5
1 2 3
SW
ON

Quick Installation Guide
6
II. Jumper setting :
SPK : Speaker Connector
6BXU
BIOS
INTEL
443BX
PIIX4
Adaptec
AIC-7890
CPU
SW
1
Pin No. Function
1
2
VCC
NC3
NC
4
Data
+
–
RST : Reset Switch
6BXU
BIOS
INTEL
443BX
PIIX4
Adaptec
AIC-7890
CPU
SW
Open :
Normal operation.
For Hardware
Reset System
Close :

6BXU
7
PWR : Power LED Connector
6BXU
BIOS
INTEL
443BX
PIIX4
Adaptec
AIC-7890
CPU
SW
1
Pin No. Function
1
2
3
LED (+)
LED (-)
LED (-)
+
HD : IDE Hard Disk Active LED
6BXU
BIOS
INTEL
443BX
PIIX4
Adaptec
AIC-7890
CPU
SW
1
Pin No. Function
1
2
LED (+)
LED (-)
+

Quick Installation Guide
8
IR : Infrared Connector (Optional)
6BXU
BIOS
INTEL
443BX
PIIX4
Adaptec
AIC-7890
CPU
SW
1
GN : Green Function Switch
6BXU
BIOS
INTEL
443BX
PIIX4
Adaptec
AIC-7890
CPU
SW
Open :
Normal operation.
Close :
Entering Green Mode

6BXU
9
SOFT PWR : Soft Power Connector
6BXU
BIOS
INTEL
443BX
PIIX4
Adaptec
AIC-7890
CPU
SW
1
Pin No. Function
12GND
Ctrl-signal
GD : Green LED Connector
6BXU
BIOS
INTEL
443BX
PIIX4
Adaptec
AIC-7890
CPU
SW
1
Pin
No.
Function
1
2
LED anode (+)
LED cathode(-)
+

Quick Installation Guide
10
ATX POWER : ATX Power Connector
6BXU
BIOS
INTEL
443BX
PIIX4
Adaptec
AIC-7890
CPU
SW
Function
3,5,7,13,15-17
4,6,19,20
GND
10
12
18
8
+12V
-12V
-5V
VCC (+5V)
Power Good
9
14
5V SB
(Stand by+5V)
PS-ON
(Soft ON/OFF)
11
PS/2 Mouse / Keyboard Connector
6BXU
BIOS
INTEL
443BX
PIIX4
Adaptec
AIC-7890
CPU
SW
Pin No.
Function
1
2
3
4
5 Clock
Data
NC
VCC (+5V)
GND
PS/2 Mouse/Keyboard
6 NC
PS/2 Keyboard
PS/2 Mouse

6BXU
11
CPU FAN : CPU Cooling Fan Power Connector
6BXU
BIOS
INTEL
443BX
PIIX4
Adaptec
AIC-7890
CPU
SW
Pin No. Function
1
2
3
GND
+12V
SENSE
1
PANEL FAN : Panel Fan Power Connector
6BXU
BIOS
INTEL
443BX
PIIX4
Adaptec
AIC-7890
CPU
SW
Pin No. Function
1
2
3
GND
+12V
SENSE
1

Quick Installation Guide
12
PWR FAN : Power FAN Connector
6BXU
BIOS
INTEL
443BX
PIIX4
Adaptec
AIC-7890
CPU
SW
Pin No. Function
1
2
3
GND
+12V
SENSE
1
IDE1: For Primary IDE port
6BXU
BIOS
INTEL
443BX
PIIX4
Adaptec
AIC-7890
CPU
SW
1
RED LINE

6BXU
13
IDE2: For Secondary IDE port
6BXU
BIOS
INTEL
443BX
PIIX4
Adaptec
AIC-7890
CPU
SW
1
RED LINE
FLOPPY : FLOPPY PORT
6BXU
BIOS
INTEL
443BX
PIIX4
Adaptec
AIC-7890
CPU
SW
1
RED LINE

Quick Installation Guide
14
ULTRA SCSI : ON BOARD ULTRA SCSI PORT
6BXU
BIOS
INTEL
443BX
PIIX4
Adaptec
AIC-7890
CPU
SW
1
RED LINE
ULTRA WIDE SCSI : ON BOARD ULTRA WIDE SCSI PORT
6BXU
BIOS
INTEL
443BX
PIIX4
Adaptec
AIC-7890
CPU
SW
1
ULTRA WIDE SCSI

6BXU
15
ULTRA II SCSI : ON BOARD ULTRA II SCSI PORT
6BXU
BIOS
INTEL
443BX
PIIX4
Adaptec
AIC-7890
CPU
SW
1
ULTRA II SCSI
LPT PORT / COM A / COM B
6BXU
BIOS
INTEL
443BX
PIIX4
Adaptec
AIC-7890
CPU
SW
COM B
LPT PORT
COM A

Quick Installation Guide
16
JP1 : Keyboard Power On
6BXU
BIOS
INTEL
443BX
PIIX4
Adaptec
AIC-7890
CPU
SW
Keyboard Power On
Default : Disable
1-2
2-3
Enable
Disable
1 2 3
USB : USB Port
6BXU
BIOS
INTEL
443BX
PIIX4
Adaptec
AIC-7890
CPU
SW
Pin No.
Function
1
2
3
4
5
6
7
8
USB D0USB D0+
GND
USB V0
GND
USB V1
USB D1USB D1+

6BXU
17
JP8 : Wake on LAN
6BXU
BIOS
INTEL
443BX
PIIX4
Adaptec
AIC-7890
CPU
SW
Pin No. Function
1
2
3
+5V SB
GND
Signal
1
J13: ATX Power Control Selection
6BXU
BIOS
INTEL
443BX
PIIX4
Adaptec
AIC-7890
CPU
SW
CLOSE :
Full on
OPEN :
Soft Off

Quick Installation Guide
18
SB-LINK : For PCI Audio / Sound Card use only
6BXU
BIOS
INTEL
443BX
PIIX4
Adaptec
AIC-7890
CPU
SW
Pin No. Function
1
2
GND
Signal
3
NC
4 Signal
5
GND
6
Signal
J14 : Case Open
6BXU
BIOS
INTEL
443BX
PIIX4
Adaptec
AIC-7890
CPU
SW
Pin No.
1
2
Function
GND
Signal

6BXU
19
BAT1:For Battery
6BXU
BIOS
INTEL
443BX
PIIX4
Adaptec
AIC-7890
CPU
SW
+
MDanger of explosion if battery is incorrectly replaced.
MReplace only with the same or equivalent type recommended by the
manufacturer.
MDispose of used batteries according to the manufacturer’ s instructions.

Quick Installation Guide
20
III. Top Performance Test Setting:
The following performance data list is the testing results of some
popular benchmark testing programs.
Users have to modify the value for each item in chipset features as
follow for top performance setting.
** Each value of items as above depends on your hardware
configuration : CPU , SDRAM , Cards , etc.
Please modify each value of items If your system does not work
properly .

6BXU
21
These data are just referred by users, and there is no responsibility for
different testing data values gotten by users. (The different Hardware &
Software configuration will result in different benchmark testing results.)
• CPU
Pentium II processor
• DRAM (32x4)MB SDRAM (SEC KM48S2020CT-G8)
• CACHE SIZE 512 KB included in CPU
• DISPLAY GA-601 AGP Display Card (4MB SGRAM)
• STORAGE Onboard Ultra Wide SCSI (IBM DRS-39130)
• O.S. Windows NT™ 4.0
• DRIVER Display Driver at 1024 x 768 x 256 colors x 75Hz.
Adaptec AIC-7890 SCSI Driver
Intel Pentium II
Processor
450MHz(100x4.5) 333MHz(66x5)
Winbench98
CPU mark32 1100 843
FPU Winmark 2290 1720
Business Disk 1930 1840
Hi-End Disk 4580 4460
Business Graphics 201 163
Hi-End Graphics 238 171
Winstone98
Business 36 30.8
Hi-End 39.4 32.8