Audio Card USB Sound Card 5.1 Channel USB Optical Audio Controller Highlights Wewoo USB Sound Card 5.1 Channel USB Optical Audio Controller USB Sound Card 5.1 Channel USB Optical Audio Controller consumption AES/EBU, IEC60958, S/PDIF for stereo PCM audio 2) Fixed 48KHz sampling rate for 5.1 channel playback 3) supports digital recording function with 32khz sampling rates, 44khz and 48khz 4) Support analog recording function 5) Support SCMS (Serial Copy Management System) copy protection 6) Compatible with Win98SE, ME, 2000, XP, Mac OS 9.1 (Mac version has 2-channel playback only) 7) Full duplex audio playback/recording without sound card on PC 8) Complies with USB Specification v1.1 9) Complies with USB Audio Device Class v1.0 10) Supports USB Audio Device Class v1.0 USB full speed 12Mbit serial data transmission 11) 3 input terminals 12) 3 output terminals 13) Alternate setting 0 is zero bandwidth setting to free up claimed bandwidth on the bus when this device is idle 14) Isochronous transfer uses adaptive and asynchronous synchronization 15) Support multi-channel audio code interface for 5.1-channel playback 16) Support 2-channel audio source playback (only L, R , active channel) 17) ready to use under Windows without external memory