Chapter 2
8
Clear CMOS Data (JP1)
To clear the contents of the CMOS, please follow the steps
below.
1. Disconnect the system power supply from the power source.
2. Set the jumper cap at location 2~3 for 5 seconds, then set it back
to the default position.
3. Connect the system's power and then start the system.
4. Enter BIOS's CMOS Setup Utility and choose Load Setup
Defaults. Type Y and press enter.
5. Set the system configuration in the Standard CMOS Setup
menu.
External Clock Frequency (JP2A/JP2B)
This jumper allows the system bus frequency to be determined
either by CPU or the user. If set both JP2A/JP2B pins to 1-2, the
CPU determines the system bus frequency speed. Set both JP2A/
JP2B pins to 2-3 for 66MHz FSB, set only JP2B pins to 2-3 for
100MHz FSB and leave both JP2A/JP2B pins open for 133MHz
FSB.
CPU Frequency Ratio (JP4)
This feature allows you to set a CPU at a
higher frequency clock ratio than it's speci-
fication allows. it may or may not run at that
ratio, depending on the quality of your CPU
and the extent to which the ratio has been
overset.
Power On By USB 1/2 and 3/4 (JP6/JP6A)
This board is able to be turned on by a USB keyboard hot key
or a USB mouse click.
To use this function, select a hot key
of your choice at the USB Resume From S3 option under Wake
Up Events in the BIOS's Power On Management screen. You
must also set both jumper's cap to pins 2-3 to use this function.
Optional C-Media Onboard Audio (JP8)
This function allows you to enable and disable the on board
audio. You must set the jumper's cap to pins 1-2 to enable or
set pins 2-3 to disable this function.
FSB
JP2A
JP2B
Auto
1~2
1~2
66
2~3
2~3
100MHz
Open
2~3
133MHz
Open
Open
Pin
Definition
1~2
Normal (default)
2~3
Clear CMOS Data
This option will not work with
frequency lock CPU.
Pin
Definition
1~2
Disable (default)
2~3
Enable
Pin
Definition
1~2
Enable
2~3
Disable
RATIO 5.5
6 6.5 7
7.5 8
8.5 9 9.5 10 10.5 11 11.5 12
A
Off On Off Off Off On Off Off On On On Off On Off
B
Off On Off On On Off On On On Off Off Off Off Off
C
Off On On On Off On On Off Off Off On On Off On
D
On Off On Off Off Off On On On Off On Off On On
