User's Manual

ASUS A88XM-A/USB 3.1
1-5
13. Digital audio connector (4-1 pin SPDIF_OUT)
ThisconnectorisforanadditionalSony/PhilipsDigitalInterface(S/
PDIF)port.ConnecttheS/PDIFOutmodulecabletothisconnector,
then install the module to a slot opening at the back of the system
chassis.
SPDIF_OUT
+5V
SPDIFOUT
GND
11. Serial port connector (10-1 pin COM)
Thisconnectorisforaserial(COM)port.Connecttheserialport
modulecabletothisconnector,theninstallthemoduletoaslot
opening at the back of the system chassis.
PIN 1
COM
DCD
TXD
GND
RTS
RI
RXD
DTR
DSR
CTS
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.
CLRTC
+3V_BAT GND
PIN 1
10. Clear RTC RAM (2-pin CLRTC)
ThisheaderallowsyoutocleartheRealTimeClock(RTC)RAMinCMOS.Youcan
cleartheCMOSmemoryofdate,andsystemsetupparametersbyerasingtheCMOS
RTCRAMdata.TheonboardbuttoncellbatterypowerstheRAMdatainCMOS,which
include system setup information such as system passwords.
12. Front panel audio connector (10-1 pin AAFP)
This connector is for a chassis-mounted front panel audio
I/OmodulethatsupportseitherHDAudioorlegacyAC`97
audio standard. Connect one end of the front panel audio
I/Omodulecabletothisconnector.
AAFP
AGND NC SENSE1_RETUR SENSE2_RETUR
PORT1 L
PORT1 R PORT2 R
SENSE_SEND
PORT2 L
HD-audio-compliant
pin definition
PIN 1
AGND NC NC NC
MIC2
MICPWR
Line out_R
NC
Line out_L
Legacy AC’97
compliant definition
• Werecommendthatyouconnectahigh-denition
frontpanelaudiomoduletothisconnector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connector,settheFront Panel
TypeitemintheBIOSsetupto[HD].Ifyouwantto
connectanAC’97frontpanelaudiomoduletothis
connector,settheitemto[AC97].Bydefault,this
connectorissetto[HD].