Asus P5W64 WS Motherboard Installation Guide - Page 63

10. CPU, Chassis, and Power Fan connectors (4-pin CPU_FAN, 3-pin PWR_FAN, 3-pin CHA_FAN1, 3-pin CHA_FAN2) The fan connectors support cooling fans of 350 mA ~ 2000 mA (24 W max.) or a total of 1 A ~ 3.48 A (41.76 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! PWR_FAN CPU_FAN CPU_FAN PWR_FAN Rotation +12V GND ® P5W64 WS PRO CPU FAN PWM CPU FAN IN CPU FAN PWR GND CHA_FAN1 CHA_FAN2 CHA_FAN1 Rotation +12V GND CHA_FAN2 GND +12V Rotation P5W64 WS PRO Fan connectors • Only the CPU_FAN, CHA_FAN1, and CHA_FAN2 connectors support the ASUS Q-Fan 2 feature. • CHA_FAN1 and CHA_FAN2 use the same Q-Fan 2 controller. If you install two VGA cards, we recommend that you plug the rear chassis fan cable to the motherboard connector labeled CHA_FAN1 for better thermal environment. ASUS P5W64 WS Professional 2-37