Asus Maximus III Gene - Manual (Page 59)

6. 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!
The IEEE 1394a module is purchased separately.
7. Thermal sensor cable connectors (2-pin OPT_TEMP1/2)
These connectors are for temperature monitoring. Connect the thermal
sensor cables to these connectors and place the other ends to the devices
which you want to monitor temperature. The optional fan1/2 can work with
the temperature sensors for a better cooling effect.
Enable OPT FAN1/2 overheat protection in BIOS if you connect thermal
sensor cables to these connectors.
The thermal sensor cable is purchased separately.
ROG Maximus III GENE 2-33