Asus V3-P5G45 - Manual (Page 70)

4-10 Chapter 4: Motherboard info
5.. IEEE.1394a.port.connector.(10-1.pin.IE1394_2)
This connector is for a 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!
You can attach a FireWire/1394 cable to this connector if your chassis suppots
the front panel IEEE1394 port. Connect the 1394 cable to ASUS Q-Connector
(1394, red) first, and then install the Q-Connector (1394) to the 1394 connector
onboard.
The IEEE 1394a module cable is purchased separately.
6.. Serial.port.connector.(10-1.pin.COM1)
This connector is for a serial (COM) port. Connect the serial port module cable
to this connector, then install the module to a slot opening at the back of the
system chassis.
The serial port module is purchased separately.