Newest Hot USB 2.0 Sound Card 6 Channel 7.1 and5.1 Optical External Audio Card SPDIF Controller for PC Laptop Desktop Tablet Features: plug and play Supports SES/EBU,IEC60958,S/PDIF consumer formats for stereo PCM audio Fixed 48KHZ sampling rate for 5.1 channel playback. Supports analog recording function Supported SCMS copy protection Compatible with Windows XP, Vista, Win7 Fully duplex playback/recording audio stream without sound card in PC Compliant with USB specification v1.1 Compliant with USB audio device cla v1.0 Supports USB full speed 12Mbit serial data transmiion 3 input terminals 3 output terminals Alternate setting 0 is a zero-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 audio code interface for 5.1 channel playback Supports conventional audio 2 channels source playback Package Included: 1 x USB Sound card 1 x Driver CD 1 x USB Cable