Specifications

ASUS P5KC 2-29
13. USB 2.0 ports 3 and 4. These two 4-pin Universal Serial Bus (USB) ports
are available for connecting USB 2.0 devices.
14. Optical S/PDIF Out port
. This port connects an external audio output device
via an optical S/PDIF cable.
15. USB 2.0 ports 5 and 6.
These two 4-pin Universal Serial Bus (USB) ports
are available for connecting USB 2.0 devices.