GIGABYTE GA-970A-DS3 (rev. 3.0) Owner's Manual | Page 15

GIGABYTE Motherboards Owner's Manual - GA-970A-DS3 (rev. 3.0).
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3/4/5) CPU_FAN/SYS_FAN1/SYS_FAN2/PWR_FAN (Fan Headers)

Themotherboardhasa4-pinCPUfanheader(CPU_FAN),a3-pin(SYS_FAN2)anda4-pin(SYS_FAN1)

systemfanheaders,anda3-pinpowerfanheader(PWR_FAN).Mostfanheaderspossessafoolproof

insertiondesign.Whenconnectingafancable,besuretoconnectitinthecorrectorientation(theblack

connectorwireisthegroundwire).Thespeedcontrolfunctionrequirestheuseofafanwithfanspeed

control design. For optimum heat dissipation, it is recommended that a system fan be installed inside the 

chassis.

1

CPU_FAN

SYS_FAN1

PWR_FAN

DEBUG 

PORT

G.QBOFM

SYS_FAN2

1

1

1

CPU_FAN:

SYS_FAN1:

SYS_FAN2/PWR_FAN:

Pin No. Definition

1

GND

2

+12V

3

Sense

4

Speed Control

Pin No. Definition

1

GND

2

+12V

3

Sense

4

Reserve

Pin No. Definition

1

GND

2

+12V

3

Sense

DEBUG 

PORT

G.QBOFM

6)  CLR_CMOS (Clear CMOS Jumper) 

UsethisjumpertocleartheCMOSvalues(e.g.dateinformationandBIOSconfigurations)andresetthe

CMOSvaluestofactorydefaults.TocleartheCMOSvalues,useametalobjectlikeascrewdrivertotouch

the two pins for a few seconds.

Open: Normal

Short: Clear CMOS Values

 • Be sure to connect fan cables to the fan headers to prevent your CPU and system from overheating. Overheating 

may result in damage to the CPU or the system may hang. 

 • Thesefanheadersarenotconfigurationjumperblocks.Donotplaceajumpercapontheheaders.

 • Always turn off your computer and unplug the power cord from the power outlet before clearing 

the CMOS values.

 • Aftersystemrestart,gotoBIOSSetuptoloadfactorydefaults(selectLoadOptimized

Defaults)ormanuallyconfiguretheBIOSsettings(refertoChapter2,"BIOSSetup,"forBIOS

configurations).

Also See for GIGABYTE GA-970A-DS3 (rev. 3.0)

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