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ASUS P4B533 motherboard user guide
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11. PCI audio setting (3-pin AUDIO_SW)
(on audio models only)
This jumper allows you to enable or disable the audio controller on the
motherboard.
12. 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. Remove the battery.
3. Place a jumper cap over the CLRTC jumper for about 5 seconds,
then remove the cap. DON’T leave the cap on the jumper!
4. Re-install the battery.
5. Plug the power cord and turn ON the computer.
6. Hold down the <Del> key during the boot process and enter BIOS
setup to re-enter data.
Disable the onboard audio controller if you desire to install a PCI audio
card into a PCI slot.
P4B533
®
P4B533 Clear RTC RAM
CLRTC
Short Jumper
to Clear CMOS
Intel I/O
Controller
Hub
(ICH4)
P4B533
®
P4B533 Audio Setting
AUDIO_SW
Enable
Disable
(Default)
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