Manual

1.8.2 Internal connectors
1. CPU and chassis fan connectors
(4-pin CPU_FAN, 4-pin CHA_FAN1/2; 3-pin PWR_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 1A(12W) fan power.
• The CPU_FAN and CHA_FAN connectors 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.
CPU_FAN
GND
CPU FAN PWR
CPU FAN IN
CPU FAN PWM
Z77-A
Z77-A CPU fan connector
PWR_FAN
CHA_FAN1
Rotation
+12V
GND
CHA_FAN2
GND CHA FAN PWR CHA FAN IN CHA FAN PWM
CHA FAN PWM
CHA FAN IN
CHA FAN PWR
GND
Chapter 1: Product introduction
1-26