User’s Manual

1-5Motherboard User Manual
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.
13. 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.
14. S/PDIF Out header
The S/PDIF Out header allows you to connect the Sony/Philips Digital
Interface (S/PDIF) Out module.
15. Speaker header
The header is for the chassis-mounted system warning speaker. The
speaker allows you to hear system beeps and warnings.
16. System Panel header
The System Panel header supports several chassis-mounted functions.
• System power LED header (+PWR_LED-)
The 2-pin header allows you to connect the System power LED. The
System power LED lights up when the system is connected to a power
source, or when you turn on the system power, and blinks when the
system is in sleep mode.
• Storage Device Activity LED header (+HDD_LED-)
The 2-pin header allows you to connect the Storage Device Activity
LED. The Storage Device Activity LED lights up or blinks when data is
read from or written to the storage device or storage device add-on card.
• Power Button/Soft-off Button header (PWR_BTN)
The 3-1 pin header allows you to connect the system power button. Press the
power button to power up the system, or put the system into sleep or soft-off mode
(depending on the operating system settings).
• Reset button header (RESET)
The 2-pin header allows you to connect the chassis-mounted reset button. Press the
reset button to reboot the system.
PORT1L
PORT1R
PORT2R
SENSE_SEND
PORT2L
AGND
NC
SENSE1_RETUR
SENSE2_RETUR
AAFP
PIN 1
HD-audio-compliant
pin definition
SPDIF_OUT
+5V
GND
GND
Speaker Out
SPEAKER
PIN 1
PIN 1
PWR_BTN
PWR_LED+ PWR_LED- PWR GND
HDD_LED+
HDD_LED-
Ground
HWRST#
(NC)
F_PANEL
+PWR_LED-
+HDD_LED- RESET