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3/4) CPU_FAN/SYS_FAN1/SYS_FAN2A/2B (Fan Headers)
All fan headers on this motherboard 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.
CPU_FAN
CPU_FAN/SYS_FAN1/SYS_FAN2A:
SYS_FAN1
1
CPU_FAN
SYS_FAN2B
Pin No.
Definition
1
GND
2
Voltage Speed Control
3
Sense
4
PWM Speed Control
SYS_FAN2A
SYS_FAN2B:
1
SYS_FAN1/SYS_FAN2A/2B
Pin No.
Definition
1
GND
2
Voltage Speed Control
3
NC
4
PWM Speed Control
5) SYS_FAN3_PUMP (System Fan/Water Cooling Pump Header)
The fan/pump 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. 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. Please navigate to
the "BIOS Setup" page of GIGABYTE's website and search for "Smart Fan 6" for more information.
1
Pin No.
Definition
1
GND
2
Voltage Speed Control
3
Sense
4
PWM Speed Control
SYS_FAN3_PUMP
•• The function settings of FAN2A_PUMP and FAN2B_PUMP are synchronized.
•• 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 configuration jumper blocks. Do not place a jumper cap on the headers.
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