Asus A55BM-K - Manual (Page 23)

ASUS A55BM-K 1-15
1.7.2 Internal connectors
1. CPU and chassis fan connectors (4-pin CPU_FAN, and 4-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.
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.
• The CPU_FAN connector supports a CPU fan of maximum 2A (24 W) fan power.
• The CPU_FAN and CHA_FAN connectors support the ASUS Fan Xpert feature.
A55BM-K
A55BM-K Fan connectors
CPU_FAN
CPU FAN PWM
CPU FAN IN
CPU FAN PWR
GND
CHA FAN PWM
CHA FAN IN
CHA FAN PWR
GND
CHA_FAN