6.CPU, front, and rear fan connectors
The fan connectors support cooling fans. 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!
•All fans feature the ASUS Smart Fan technology.
7.Serial port connector
This connector is for the serial COM port. Connect the serial port module cable to one of these connectors, then install the module to a slot opening at the back of the system chassis.