Asus A7A266 User Manual page 39

3. HARDWARE SETUP
14) Chassis, Power Supply, CPU, and Chipset Fan Connectors
(3-pin CHA_FAN, PWR_FAN, CPU_FAN)
These connectors support cooling fans of 350mA (4.2 Watts) or less. Orientate
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 polarity of the connector.
NOTE: The "Rotation" signal is to be used only by a specially designed fan with
rotation signal. The Rotations per Minute (RPM) can be monitored using ASUS PC
Probe (see 6. SOFTWARE REFERENCE).
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.
1 0 1 0
A7A266
A7A266 12-Volt Cooling Fan Power
CPU_FAN
PWR_FAN
CHA_FAN
ASUS A7A266 User's Manual
GND
+12V
Rotation
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