Gigabyte GA-H67A-UD3H Manual - Page 24

CPU_FAN/SYS_FAN1/SYS_FAN2/PWR_FAN Fan Headers

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Page 24 highlights

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 system fans, and a 3-pin power 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 motherboard supports CPU fan speed control, which requires the use of a CPU 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. Definition 1 1 GND CPU_FAN 2 +12V / Speed Control 3 Sense 4 Speed Control SYS_FAN1: Pin No. Definition 1 GND 1 2 +12V / Speed Control SYS_FAN1 3 Sense 4 Reserve SYS_FAN2/PWR_FAN: Pin No. Definition 1 GND 1 SYS_FAN2/PWR_FAN 2 +12V 3 Sense • 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. Hardware Installation - 24 -

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Hardware Installation
- 24 -
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 system
fans, and a 3-pin power 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 motherboard supports CPU fan speed control, which requires the use of a CPU 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 over-
heating. 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.
CPU_FAN:
Pin No.
Definition
1
GND
2
+12V / Speed Control
3
Sense
4
Speed Control
SYS_FAN1:
Pin No.
Definition
1
GND
2
+12V / Speed Control
3
Sense
4
Reserve
SYS_FAN1
CPU_FAN
1
1
1
SYS_FAN2/PWR_FAN:
Pin No.
Definition
1
GND
2
+12V
3
Sense
SYS_FAN2/PWR_FAN