Gigabyte GA-970A-D3P - Fan Headers; Clear CMOS Jumper

- 23 -
Hardware Installation
3/4/5) CPU_FAN/SYS_FAN1/SYS_FAN2/PWR_FAN (Fan Headers)
 Themotherboardhasa4-pinCPUfanheader(CPU_FAN),a4-pin(SYS_FAN1)anda3-pin(SYS_FAN2)
systemfanheaders,anda3-pinpowerfanheader(PWR_FAN).Mostfanheaderspossessafoolproof
insertiondesign.Whenconnectingafancable,besuretoconnectitinthecorrectorientation(theblack
connectorwireisthegroundwire).Thespeedcontrolfunctionrequirestheuseofafanwithfanspeed
control design. For optimum heat dissipation, it is recommended that a system fan be installed inside the
chassis.
• Be sure to connect fan cables to the fan headers to prevent your CPU and system from overheat-
ing. Overheating may result in damage to the CPU or the system may hang.
• Thesefanheadersarenotcongurationjumperblocks.Donotplaceajumpercapontheheaders.
1
CPU_FAN
SYS_FAN1
DEBUG
PORT
G.QBOFM
DEBUG
PORT
G.QBOFM
SYS_FAN2/PWR_FAN
1
1
CPU_FAN:
PinNo. Denition
1 GND
2 +12V/SpeedControl
3 Sense
4 Speed Control
SYS_FAN1:
PinNo. Denition
1 GND
2 +12V/SpeedControl
3 Sense
4 Reserve
SYS_FAN2/PWR_FAN:
PinNo. Denition
1 GND
2 +12V
3 Sense
6) CLR_CMOS (Clear CMOS Jumper)
 UsethisjumpertocleartheCMOSvalues(e.g.dateinformationandBIOScongurations)andresetthe
CMOS values to factory defaults. To clear the CMOS values, use a metal object like a screwdriver to touch
the two pins for a few seconds.
Open:Normal
Short:ClearCMOSValues
• Always turn off your computer and unplug the power cord from the power outlet before clearing
the CMOS values.
• Aftersystemrestart,gotoBIOSSetuptoloadfactorydefaults(selectLoadOptimizedDefaults)or
manuallyconguretheBIOSsettings(refertoChapter2,"BIOSSetup,"forBIOScongurations).