Asus P5NT WS - Manual (Page 53)

ASUS P5NT WS 2-29
8. CPU, chassis, and power connectors
(4-pin CPU_FAN, 3-pin CHA_FAN1~4, 3-pin PWR_FAN)
The fan connectors support cooling fans of 1A~2.2A (26.4 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!
• Only the CHA_FAN1 connector supports the ASUS Q-FAN 2 feature.
• If you install two VGA cards, we recommend that you plug the rear chassis
fan cable to the motherboard connector labeled CHA_FAN1 or CHA_FAN2
for better themal environment.