Asus P5B - Manual (Page 60)

2-32 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. Insufficient air
flow inside the system may damage the motherboard components. These are
not jumpers! Do not place jumper caps on the fan connectors!
P5B PREMIUM
®
P5B PREMIUM Fan connectors
CPU_FAN
CHA_FAN2
GND
Rotation
+12V
GN
D Rotatio
n
+12
V
GND CPU F
AN PWR
CPU F
AN IN
CPU F
AN PWM
CHA_FAN3
GN
D Rotatio
n
+12
V
CHA_FAN1
PWR_FAN
GND
Rotation
+12V
• Only the CPU-FAN and CHA-FAN 1-3 connectors support 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 labled CHA_FAN1
or CHA_FAN2 for better themal environment.