Asus ESC2000 G2 - Manual (Page 74)

Chapter 3: Motherboard information 3-26
13. Digital audio connector (4-1 pin SPDIF_OUT)
This connector is for an additional Sony/Philips Digital Interface (S/PDIF) port(s).
Connect the S/PDIF Out module cable to this connector, then install the module to a
slot opening at the back of the system chassis.
14. IEEE 1394a port connectors (10-1 pin IE1394_1/2)
These connectors are for 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.
The S/PDIF module is purchased separately.
The IEEE 1394a module is purchased separately.
Never connect a USB cable to the IEEE 1394a connector. Doing so will damage the
motherboard!