Owner manual

1-16
Chapter 1: Product introduction
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.
• The CPU_FAN connector supports a CPU fan of maximum 2A (24W) fan power.
• The 4-pin CPU_FAN and chassis fan support the ASUS Fan Xpert feature.
DO NOT forget to connect the fan cables to the fan connectors. Insufcient air ow inside
the system may damage the motherboard components. These are not jumpers! DO NOT
place jumper caps on the fan connectors.
A78M-A
A78M-A 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