Features: 1.? 2.USB Sound is an USB controller. It supports 32KBz,44.1khz.(which two need driver or application software support)and 48KHZ sampling rate in digital recording,48KHZ sampling in analog recordin and 48KHZ in digital or analog playback. 3.In digital playback mode, it receives stream from PC via USB interface and transmits data according to the? AES/EBU,IEC60958,S/PDIF consumer interface standards. 4.Only R,L channel PCM in 5.1 channel can be conveyed in digital playback mode.In analog playback mode,it supports 6 channels codec for analog playback. 5.In digital recording mode, it receives S/PDIF digital input and sends back to PC through USB.Three sampling rates;includes 32KHZ,44.1KHZ are automatically locked internally. 6.In analog recording mode,fixed 48khz sampling rate is supported by analog recording.?? specification:: Supports analog recording function Supported SCMS copy Compatible with for Win98SE, for ME, 2000, for XP Vista 7, 8. Fully duplex playback or recording stream without sound card in PC Compliant with USB v1.1 Compliant with USB device class v1.0 Supports USB full speed 12Mbit serial data transmission 3 input terminals, 3 output terminals?? Alternate setting 0 is a bandwidth setting used to release the claimed bandwidth on the bus when this device is inactive Isochronous transfer uses adaptive and asynchronous synchronization Support multi channels interface for 5.1 channel playback Support conventional 2 channels source playback PackageList:Package Include:?1 x USB 2.0 Sound Card1 x Driver CD1 x USB Cable