Gigabyte GA-Z97X-UD3H, User Manual

Page: 24 / 112

- 24 - Hardware Installation
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Be sure to connect fan cables to the fan headers to prevent your CPU and system from overheat-
ing. 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.
3/4) CPU_FAN/SYS_FAN1/SYS_FAN2/SYS_FAN3 (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.
5) CPU_OPT (Water Cooling CPU Fan Header)
The fan header is 4-pin and possesses 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.
CPU_FAN:
Pin No. Definition
1 GND
2 +12V
3 Sense
4 Speed Control
SYS_FAN1/SYS_FAN2/SYS_FAN3:
Pin No. Definition
1 GND
2 +12V / Speed Control
3 Sense
4 VCC
SYS_FAN1/SYS_FAN2/SYS_FAN3
CPU_FAN
1
1
DEBUG
PORT
G.QBOFM
DEBUG
PORT
G.QBOFM
CPU_OPT
1
DEBUG
PORT
G.QBOFM
Pin No. Definition
1 GND
2 +12V / Speed Control
3 Sense
4 VCC