Gigabyte GA-Z77X-UP4 TH - Page 24

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Hardware Installation
• 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.
3/4) CPU_FAN/SYS_FAN1/SYS_FAN2/SYS_FAN3/SYS_FAN4 (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:
Pin No. Denition
1 GND
2 +12V /Speed Control
3 Sense
4 Speed Control
SYS_FAN1:
Pin No. Denition
1 GND
2 +12V /PWM
3 FAN I/O
4 NC
CPU_FAN
DEBUG
PORT
G.QBOFM
DEBUG PORT
G.QBOFM
1
1
SYS_FAN1
DEBUG
PORT
G.QBOFM
1
SYS_FAN2
DEBUG
PORT
G.QBOFM
1
SYS_FAN2/3:
Pin No. Denition
1 GND
2 +12V
3 FAN I/O
4 PWM
SYS_FAN4
DEBUG PORT
G.QBOFM
1
SYS_FAN3
SYS_FAN4:
Pin No. Denition
1 GND
2 +12V
3 FAN I/O
4 NC