featureSupports AESEBU, IEC60958, SPDIFTruly supports 5.1 channels and 7.1 channels. Can connect to 5.1 speakersUp to 48KHz sampling rate, supporting 32KHz44KHz48KHz digital recording functionThe sound card fiber output only supports a sampling rate of 48KHz, so DTSCD is 44KH and requires conversion to listenSupport Win98ME2000PVISTAWIN7WIN8MAC OS9.1 only 2 channels can be used in MACPlayback and recording of full duple audio streams without the need for a builtin PC sound cardUSB 2.0 is backward compatible with USB 1.1Compatible with audio device specification V1.0Supports USB full speed transmission specifications up to 12Mbpsinput terminals one of which is a fiber optic inputoutput terminals and 1 fiber optic output terminalOutput 5.1 channelsfiber SPDIFComposition PCsound cardamplifier and 5.1 speakerApplicable to HTPC home theaters and friends with high audio quality requirements such as watching moviesgameskaraoke, can be plugged into regular earphones for voice chat and online karaoke.Other Enjoy real AC3 or DTS surround sound effects in your digital home theater or connect directly to a 5.1 active speaker.Packaging includes1 Sound card