User`s manual

Chapter 2

JUMPERS

The mainboard provides jumpers for setting some mainboard functions. This

section will explain how to change the settings of the mainboard functions

using the jumpers.

Clear CMOS: CLEAR_CMOS1

The onboard CMOS RAM stores system configuration data and has an

onboard battery power supply. To reset the CMOS settings, set the jumper

on pins 2 and 3 while the system is off. Return the jumper to pins 1 and 2

afterwards. Setting the jumper while the system is on will damage the

mainboard.

Setting 1 2 3

Clear CMOS setting OFF ON ON

Keep CMOS setting ON ON OFF

WARNING: Except when clearing the RTC RAM, never remove the

cap on CLEAR_CMOS1 jumper default position. Removing the cap

will cause system boot failure. Avoid clearing the CMOS while the

system is on; it will damage the mainboard.

CPU Front Side Bus Speed Select: FS1

This jumper is for selecting CPU Front Side Bus Speed

between 533MHz and 400MHz. Setting: shorting pins 1 &

2 will select 533MHz, while shorting pins 2 & 3 will select

400MHz.

Setting 1 2 3

400MHz OFF ON ON

533MHz ON ON OFF

Clear:

132

Keep:

132

400MHz:

533MHz:

FS1