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ASUS F2A55 User Manual

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1.8.2 
Internal connectors
1. 
CPU and chassis fan connectors (4-pin CPU_FAN, and 4-pin CHA_FAN1/2)
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 (24 W) fan power.
• 
Only the 4-pin CPU fan and 4-pin chassis fan support the ASUS Fan Xpert+ feature.
• 
If you install two VGA cards, we recommend that you plug the rear chassis fan cable 
to the motherboard connector labeled CHA_FAN1/2 for better thermal environment.
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.
F2A55
F2A55 Fan connectors
CHA_FAN2
CHA
 F
AN PWM
CHA
 F
AN IN
CHA
 F
AN PWR
GND
CPU_FAN
CPU F
AN PWM
CPU F
AN IN
CPU F
AN PWR
GND
CHA_FAN1
CHA
 F
AN PWM
CHA
 F
AN IN
CHA
 F
AN PWR
GND
ASUS F2A55
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