Asus P4C800-E User Manual download pdf (Page 45)

ASUS P4C800-E Deluxe motherboard user guide

2-19

2.7 Jumpers

1. Keyboard power (3-pin KBPWR)

This jumper allows you to enable or disable the keyboard wake-up

feature. Set this jumper to pins 2-3 (+5VSB) if you wish to wake up the

computer when you press a key on the keyboard (the default is the

Space Bar). This feature requires an ATX power supply that can supply

at least 1A on the +5VSB lead, and a corresponding setting in the

BIOS (see section 4.5.1 Power Up Control).

2. Clear RTC RAM (CLRTC)

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 RAM

data in CMOS, that include system setup information such as system

passwords, is powered by the onboard button cell battery.

To erase the RTC RAM:

1. Turn OFF the computer and unplug the power cord.

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

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

to pins 1-2.

3. Plug the power cord and turn ON the computer.

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

setup to re-enter data.

Except when clearing the RTC RAM, never remove the cap on CLRTC

jumper default position. Removing the cap will cause system boot

failure!

P4C800-E

P4C800-E Keyboard Power Setting

(Default)

+5V +5VSB

KBPWR

2312

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Asus P4C800-E User Manual Page 45