Asus P4B-LA User Manual page 29

3. HARDWARE SETUP
10) CPU (CPU_FAN), Power Supply (PS_FAN), Chassis (SYS_FAN) Fan
Connectors (3 pins)
These connectors support cooling fans of 750mA or less. Orient the fans so that
the heat sink fins allow airflow to go across the onboard heat sink(s) instead of
the expansion slots. Depending on the fan manufacturer, the wiring and plug
may be different. The red wire should be positive, while the black should be
ground. Connect the fan's plug to the board taking into consideration the polar-
ity of the connector.
NOTE: The "Rotation" signal is to be used only by a specially designed fan with
rotation signal.
WARNING!
The CPU and/or motherboard will overheat if there is no airflow
across the CPU and onboard heatsinks. Damage may occur to the motherboard
and/or the CPU fan if these pins are incorrectly used. These are not jumpers,
do not place jumper caps over these pins.
P4B-LA
P4B-LA 12-Volt Cooling Fan Power
CPU_FAN
PS_FAN
SYSTEM_FAN
P4B-LA Quick Start Manual
GND
FAN-STOP
GND
GND
+12V
Rotation
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