Fangrui Product Details Support /, Iec60958, S/pdif. Really Supports 5.1 Channel Channel. Can Be Connected To 5.1 Speakers Sampling Rate Up To 48khz, Supports 32khz/44khz/48khz Digital Recording Function The Optical Fiber Output Of The Sound Card Only Supports The Sampling Rate Of 48khz, So Dts-cd Is 44kh And Needs To Be Converted Before Listening. Support Win98/me/2000/xp/vista/win7/win8/ Os9.1 (only 2 Channels Can Be Used In ) Playback And Recording Of Full-duplex Audio Streams Without The Need For A Pc Built-in Sound Card. Usb2.0 Is Backward Compatible With Usb 1.1; Compatible With Audio Device Specification V1.0; Supports Usb Full-speed Mission Specification Up To 12mbps; Featuring 3 Input Ports (including 1 Optical Input), 3 Output Ports, And 1 Optical Output Port, This Usb Audio Adapter Offers A Wide Range Of Connectivity Options. It Allows You To Connect Your Computer To A 5.1 Surround Sound Speaker System Using Either 3.5mm Stereo Or Connectors, Depending On The Specifications Of Your Audio Equipment. Material: Alumin