User’s Manual

1-4
Chapter 1: Product introduction
To erase the RTC RAM:
1. Turn OFF the computer and unplug the power cord.
 2. Useametalobjectsuchasascrewdrivertoshortthetwopins.
 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.
Ifthestepsabovedonothelp,removetheonboardbatteryandshortthetwopinsagainto
cleartheCMOSRTCRAMdata.AfterclearingtheCMOS,reinstallthebattery.
12. COM Port header
This header is for a serial (COM) port. Connect the serial port module cable
tothisheader,theninstallthemoduletoaslotopeningatthebackofthe
system chassis.
13. Front panel audio header
Thisheaderisforachassis-mountedfrontpanelaudioI/Omodulethat
supportsHDaudiostandard.Connectoneendofthefrontpanelaudio
I/Omodulecabletothisheader.
• Werecommendthatyouconnectahigh-denitionfrontpanel
audiomoduletothisheadertoavailofthemotherboard’s
high-denitionaudiocapability.
• Ifyouwanttoconnectahigh-denitionfrontpanelaudio
moduletothisheader,settheFrontPanelTypeiteminthe
BIOSsetupto[HDAudio].Bydefault,thisheaderissetto
[HDAudio].
14. S/PDIF Out header
ThisheaderisforanadditionalSony/PhilipsDigitalInterface(S/PDIF)port.
ConnecttheS/PDIFOutmodulecabletothisheader,theninstallthemodule
to a slot opening at the back of the system chassis.
15. 20-3 pin System Panel header
Thisheadersupportsseveralchassis-mountedfunctions.
• SystempowerLED(2-pin+PWR_LED-)
This2-pinheaderisforthesystempowerLED.Connectthe
chassispowerLEDcabletothisheader.Thesystempower
LEDlightsupwhenyouturnonthesystempower,andblinks
when the system is in sleep mode.
• HarddiskdriveactivityLED(2-pin+HDD_LED-)
AAFP
AGND NC SENSE1_RETUR SENSE2_RETUR
PORT1 L
PORT1 R PORT2 R
SENSE_SEND
PORT2 L
HD-audio-compliant
pin definition
SPDIF_OUT
+5V SPDIFOUT GND
PLED+ PLED- PWR Ground +5V Ground Ground Speaker CASEOPEN
HDD_LED+
HDD_LED-
GND
Reset
+5V
PLED+
PLED-
GND
PIN 1
+PWR_LED-
+PWR_LED-
SPEAKER
PANEL
+HDD_LED-
PWR_SW
RESET
* Requires an ATX power supply
CHASSIS
PIN 1
COM
DCD
TXD
GND
RTS
RI
RXD
DTR
DSR
CTS