User manual

1-10
Chapter 1: Product introduction
1.5.3 PCI slot
ThePCIslotssupportLANcards,SCSIcards,USBcards,andothercardsthatcomplywith
PCIspecications.
1.5.4 PCI Express 2.0 x1 slot
ThismotherboardsupportsPCIExpressx1networkcards,SCSIcards,andothercardsthat
complywiththePCIExpressspecications.
1.5.5 PCI Express 3.0/2.0 x16 slot;
PCI Express 2.0 x16 (@x4) slot
ThismotherboardsupportsPCIExpressx16networkcards,SCSIcards,andothercardsthat
complywiththePCIExpressspecications.
1.6 Headers
1. 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,time,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.
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.
IRQ assignments for this motherboard
A B C D E F G H
IntelPCHSATAcontroller
– – – shared – – – –
Realtek8111Fcontroller
– – shared – – – –
B85M-E
B85M-E Clear RTC RAM
CLRTC
GND
PIN 1
+3V_BAT