User Manual

5) CPU_OPT (Water Cooling CPU Fan Header)
The fan header is 4-pin and possesses a foolproof insertion design. 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.
DEBUG PORT
G.QBOFM
DEBUG PORT
G.QBOFM
1
1
SYS_FAN1_PUMP SYS_FAN2/3_PUMP
Pin No. Denition
1 GND
2 Voltage Speed Control
3 Sense
4 PWMSpeedControl
4) CPU_FAN (Fan Header)
 Thefanheaderis4-pin.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
overheating. 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.
DEBUG
PORT
G.QBOFM
1
Pin No. Denition
1 GND
2 Voltage Speed Control
3 Sense
4 PWMSpeedControl
DEBUG
PORT
G.QBOFM
1
6) SYS_FAN1/2/3_PUMP (System Fan/Water Cooling Pump Headers)
 Thefan/pumpheadersare4-pin.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. The header also provides speed control
for a water cooling pump, refer to Chapter 2, "BIOS Setup," "M.I.T.," for more information.
Pin No. Denition
1 GND
2 Voltage Speed Control
3 Sense
4 PWMSpeedControl
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