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2-34 Chapter 2: Hardware information
8. CPU, chassis and power fan connectors
(4-pin CPU_FAN, 3-pin CHA_FAN1-3, 3-pin PWR_FAN)
The fan connectors support cooling fans of 350 mA ~ 2000 mA (24 W max.)
or a total of 1 A ~ 7 A (84 W max.) at +12V. Connect the fan cables to the
fan connectors on the motherboard, making sure that the black wire of each
cable matches the ground pin of the connector.
DO NOT forget to connect the fan cables to the fan connectors. Insufcient air
ow inside the system may damage the motherboard components. These are
not jumpers! Do not place jumper caps on the fan connectors!
• Only the CPU-FAN and CHA-FAN 1-3 connectors support the ASUS Q-Fan
feature.
• If you install two or more VGA cards, we recommend that you plug the
rear chassis fan cable to the motherboard connector labeled CHA_FAN1,
CHA_FAN2 or CHA_FAN3 for better thermal environment.