Record and play digital and analog audio without a built-in sound card. This external USB sound card supports USB 6-channel 5.1 audio. Adds full duplex audio playback/recording to any PC. In digital playback mode, the device receives audio from the computer via the USB interface and transmits audio data according to AES/EBU, IEC60958, and S/PDIF interface standards. The USB audio controller supports 32 KHz, 44.1 KHz, and 48 KHz sampling rates for digital recording, 48KHz sampling rate for analog recording, and 48KHz for digital/analog audio playback. Only R L channel PCM audio in 5.1 channel can be transmitted in digital playback mode. For fiber output to support 5.1 channel output, the audio source must be DTS 5.1 channels, such as 3D games or high-definition movies. General MP3 or 2-channel video will only have a 2-channel effect. Type: USB Sound Card System Requirements: Windows 10/8/7/XP/2000/98 or Apple Mac OS 9.1 and Mac OSX (Mac version only supports two-channel playback.) Features: External Sound Card, USB 2.0, High Performance Dimension: 15cm x 3.5cm x 1.5cm/5.91\" x 1.38\" x 0.59\" (Approx.) Package Includes: 1 x USB 5.1 Sound Card, 1 x CD Driver, 1 x USB Cable