Audio Output Adapter External Sound Card 6 Channel 5.1 SPDIF USB Optical for PC

In digital recording mode, it receives SPDIF digital audio input and sends back to PC through USB. - Inputs: SPDIF in, Line in, Mic in. - Outputs: SPDIF out, Front out, Rear out, Cen/Bass out. - In digital playback mode, it receives audio stream from PC via USB interface and transmits audio dalrxta.