Asus M4A77 - Manual (Page 38)

CPU_FAN
GN
D
CPU
FA
N PW
R
CPU
FA
N IN
CPU
FA
N PW
M
M4A77
M4A77 fan connectors
GN
D
+12V Rotation
CHA_FAN
8. CPU and chassis fan connectors (4-pin CPU_FAN and 3-pin CHA_FAN)
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.
Chapter 1: Product introduction 1-28