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10. Clear CMOS header
The Clear CMOS header allows you to clear the Real Time Clock (RTC) RAM
in the CMOS, which contains the date, time, system passwords, and system
setup parameters.
To erase the RTC RAM:
1.
Turn OFF the computer and unplug the power cord.
2.
Short-circuit pin 1-2 with a metal object or jumper cap for about 5-10 seconds.
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.
DO NOT short-circuit the pins except when clearing the RTC RAM. Short-circuiting or
placing a jumper cap will cause system boot failure!
If the steps above do not help, remove the onboard button cell battery and short the two
pins again to clear the CMOS RTC RAM data. After clearing the CMOS, reinstall the button
cell battery.
11. COM Port header
The COM (Serial) Port connector allows you to connect a COM port module.
Connect the COM port module cable to this connector, then install the module
to a slot opening on the system chassis.
12. Front Panel Audio header
The Front Panel Audio header is for a chassis-mounted front panel
audio I/O module that supports HD Audio. Connect one end of the
front panel audio I/O module cable to this header.
13. S/PDIF Out header
The S/PDIF Out header allows you to connect the Sony/Philips Digital
Interface (S/PDIF) Out module.
14. Speaker header
The header is for the chassis-mounted system warning speaker. The
speaker allows you to hear system beeps and warnings.
1-4
Chapter 1: Product Introduction
CLRTC
PIN 1
COM
F_AUDIO
PIN 1
PORT1L
AGND
PORT1R
NC
PORT2R
SENSE1_RETUR
SENSE_SEND
PORT2L
SENSE2_RETUR
HD-audio-compliant
pin definition
SPDIF_OUT
SPEAKER
PIN 1
+5V
GND
GND
Speaker Out
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