USB 3D surround sound card 6CH/ optical ,Chip:CM6206   
Supports AES/EBU,IEC60958,S/PDIF consumer formats for stereo PCM audio
Fixed 48 KHz sampling rate for 7.1 channel playback
Supports digital recording unction with 32KHz,44Khz and 48KHz sampling rates
Supports analog recording function
Supports SCMS(Serial Copy Management System) copy protection
Compatible with Win98SE,ME,2000,XP,Mac OS 9.1 VISTA(Macversion has 2 channel playback only)
Fully duplex playback/recording audio stream without sound card in PC
Compliant with USB specification V1.1 V2.0
Compliant with USB audio device class V1.0 V2.0
Supports USB full speed 12Mbit 480mbit serial data transmission
Supports input and output channels
Supports multi channels audio code interface for 7.1 channel playback
Supports conventional audio 2 channels source playback(only L,Rchannel active)
Plug and Play under windows without external memory