Owner`s manual

Rear Panel
[15] Digital Output
Standard S/PDIF digital output (coaxial) of the Soundcard output signal.
[16] Digital Input
Standard S/PDIF digital input (coaxial) of the Soundcard input signal.
[17] Coaxial/Optical IN
This switch allows the selection of Coaxial or Optical digital input.
[18] USB
USB connector. It allows to connect the soundcard to the PC by means of an USB
cable.
[19] Digital Output
Standard S/PDIF digital output (optical) of the Soundcard output signal.
[20] Digital Input
Standard S/PDIF digital input (optical) of the Soundcard input signal.
X4 Owner's Manual - Rev. 1.4 - page 13