Asus M4A88TD-M EVO/USB3 - Manual (Page 41)

10. Power, CPU, and chassis fan connectors (3-pin PWR_FAN, 4-pin CPU_FAN,
3-pin CHA_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.
Only the 4-pin CPU fan and chassis fan supports the ASUS FanXpert 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.
11. IEEE 1394a port connector (10-1 pin IE1394_1)
This connector is for an IEEE 1394a port. Connect the IEEE 1394a module cable
to this connector, then install the module to a slot opening at the back of the system
chassis.
Never connect a USB cable to the IEEE 1394a connector. Doing so will damage the
motherboard.
The IEEE 1394a module is purchased separately.
ASUS M4A88TD-M EVO 1-29