functionSupports AESEBU, IEC60958, SPDIFTruly supports 5.1 channels and 7.1 channels. Can be connected to 5.1 speakersUp to 48KHz sampling rate, supports 32KHz44KHz48KHz digital recording functionThe sound cards fiber output only supports a sampling rate of 48KHz, so DTSCD is 44KH and requires conversion to listenSupports Win98ME2000PVISTAWIN7WIN8MAC OS9.1 only 2 channels can be used in MACPlayback and recording of full duplex 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 transfer specifications up to 12Mbps3 input terminals, one of which is a fiber optic input3 output terminals and 1 fiber optic output terminalOutput 5.1 channels fiber SPDIFComposition PC sound card amplifier and 5.1 speakersSuitable for HTPC home theater and friends with high sound quality requirements such as watching movies, games, karaoke, can be connected to ordinary headphones for voice chat and online karaoke.Other Enjoy true AC3 or DTS surround sound effects in your digital home theater or connect directly to a 5.1 active speaker.The package contains1Sound card