Gigabyte GA-X79-UP4 - Page 24

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Hardware Installation
• Be sure to connect fan cables to the fan headers to prevent your CPU and system from overheating. Overheat-
ing 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.
3/4) CPU_FAN/SYS_FAN1/SYS_FAN2/SYS_FAN3/SYS_FAN4 (Fan Headers)
 Themotherboardhasa4-pinCPUfanheader(CPU_FAN),two4-pin(SYS_FAN1/SYS_FAN2)andtwo
3-pin(SYS_FAN3/SYS_FAN4)systemfanheaders.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.
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
CPU_FAN
SYS_FAN2
DEBUG
PORT
G.QBOFM
1
SYS_FAN1
DEBUG
PORT
G.QBOFM
1
SYS_FAN2:
Pin No. Denition
1 GND
2 +12V
3 Sense
4 Speed Control
SYS_FAN3/SYS_FAN4:
Pin No. Denition
1 GND
2 +12V
3 Sense
DEBUG
PORT
G.QBOFM
1
SYS_FAN3/SYS_FAN4
1
5) 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.
• 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).
Open: Normal
Short: Clear CMOS Values