Asus Z77-A - Manual (Page 38)

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. 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
Z77-A
Z77-A CPU fan connector
PWR_FAN CHA_FAN1
Rotation
+12V GND
CHA_FAN2
GND CHA
F
AN PWR
CHA
F
AN IN
CHA
F
AN PWM
CHA
F
AN PWM
CHA
F
AN IN
CHA
F
AN PWR
GND
Chapter 1: Product introduction 1-26