Asus P5K64 WS Motherboard Installation Guide - Page 52
CPU, chassis and power fan connectors, pin CPU_FAN, 3-pin CHA_FAN1-2, 3-pin PWR_FAN, 3-pin OPT_FAN
UPC - 610839152261
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Page 52 highlights
6. CPU, chassis and power fan connectors (4-pin CPU_FAN, 3-pin CHA_FAN1-2, 3-pin PWR_FAN, 3-pin OPT_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. Insufficient air flow inside the system may damage the motherboard components. These are not jumpers! Do not place jumper caps on the fan connectors! CPU_FAN PWR_FAN Rotation +12V GND CPU FAN PWM CPU FAN IN CPU FAN PWR GND P5K64 WS P5K64 WS Fan Connectors OPT_FAN GND +12V Rotation CHA_FAN2 Rotation +12V GND CHA_FAN1 GND +12V Rotation • Only the CPU-FAN and CHA-FAN 1-2 connectors support the ASUS Advanced Q-Fan feature. • If you install two VGA cards, we recommend that you plug the rear chassis fan cable to the motherboard connector labled CHA_FAN1 or CHA_FAN2 for better themal environment. 2-26 Chapter 2: Hardware information