Asus Crosshair III Formula - Manual (Page 61)

4. IEEE 1394a port connector (10-1 pin IE1394_2)
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!
5. ROG connector (3-pin ROG)
This connector is for the box (labeled as Republic of Gamers) on the
heatpipe assembly. Connect the cable of the box and it lights when the
system is on.
ROG Crosshair III Formula 2-33