1. CPU, chassis, and power fan connectors (4-pin CPU_FAN; 3-pin CHA_FAN; 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.
DO NOT forget to connect the fan cables to the fan connectors. Insufcient air ow inside
the system may damage the motherboard components. These are not jumpers! DO NOT
place jumper caps on the fan connectors.
1.10.2 Internal connectors
2. Serial port connector (10-1 pin COM1)
The connector is for a serial (COM) port. Connect the serial port module cable to the
connector, then install the module to a slot opening at the back of the system chassis.
The serial port module is purchased separately.