Asus M4A77TD PRO/U3S6 - Manual (Page 39)

9. Power, CPU, and chassis fan connectors (3-pin PWR_FAN, 4-pin CPU_FAN,
and 3-pin CHA_FAN)
The fan connectors support cooling fans of 350mA~740mA (8.88W max.) or a total of
1A~2.22A (26.64W max.) at +12V. Connect the fan cables to the fan connectors on the
motherboard, ensuring that the black wire of each cable matches the ground pin of the
connector.
Only the 4-pin CPU fan supports the ASUS Q-Fan feature.
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.
CPU_FAN
GND
CPU FAN PWR
CPU FAN IN
CPU FAN PWM
M4A77TD PRO
M4A77TD PRO fan connectors
GND
+12V
Rotation
CHA_FAN
Rotation
+12V GND
PWR_FAN
ASUS M4A77TD PRO 1-27