8.CPU and chassis fan connectors (4-pin CPU_FAN, 3-pin CHA_FAN)

Connect the fan cables to the fan connectors on the motherboard, ensuring that the black wire of each cable matches the ground pin of the connector.

CPU_FAN

GND

CPU FAN PWR

CPU FAN IN

CPU FAN PWM

CHA_FAN

P8H77-M

Rotation +12V GND

P8H77-M fan connectors

Do not forget to connect the fan cables to the fan connectors. Insufficient air flow inside the system may damage the motherboard components. These are not jumpers! Do not place jumper caps on the fan connectors!

•The CPU_FAN connector supports the CPU fan of maximum 1A (12 W) fan power.

•Only the CPU_FAN connector supports the ASUS FAN Xpert feature.

•If you install two VGA cards, we recommend that you plug the rear chassis fan cable to

the motherboard connector labeled CHA_FAN for better thermal environment.

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Chapter 1: Product introduction