Record & play back digital and analog audio without sound card in your computer * This External Sound Card connects to your computer"s USB port and offers all the benefits * Supports SES/EBU,IEC60958,S/PDIF consumer formats for stereo PCM audio * Supports analog recording function * Compatible with Win98SE,ME,2000,XP,Mac OS 9.1(-+Mac version only have 2 channel playback only)