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_CMOS

This jumper allows you to clear the Real Time Clock (RTC) RAM in CMOS.

You can clear the CMOS memory of date, time and system setup parameters

by erasing the CMOS RTC RAM data. The onboard button cell battery

powers the RAM data in CMOS that include system setup information such

as system passwords.

Setting 1 2 3

Clear CMOS setting ON ON OFF

Keep CMOS setting OFF ON ON

To erase the RTC RAM:

• Turn OFF the computer and unplug the power cord.

• Remove the onboard battery

• Move the jumper cap from pins 1-2 (default) to pins 2-3. Keep cap

on pins 2-3 for about 5~10 seconds, then move the cap back to

pins 1-2.

• Replace the battery.

• Plug the power cord and turn ON the computer.

• Hold down the <Del> key during the boot process and enter BIOS

• Setup to re-enter data.

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

cap on CLEAR_CMOS jumper default position. Removing the cap

will cause system boot failure. Clearing the CMOS while the system

is on may damage the mainboard.

CLEAR_CMOS