Note: You cannot use the microphone reverb function when using Stereo Mix. USB audio and USB audio control. It supports 32KBz, 44.1khz (both require driver or software support) and 48Khz sampling rate for digital recording, 48KHz sampling for digital-analog audio playback. In digital playback mode, it receives audio streams from the PC via the USB interface and transmits audio data according to AESEBU, IEC60958, SPDIF consumer interface standards. Only RL-channel PCM audio in 5.1-channel can be transmitted during digital playback. In digital recording mode, it receives SPDIF digital audio input and sends it back to the PC via USB. Three sampling rates, including 32KHz, 44.1KHz are automatically locked internally. In analog recording mode, a fixed 48KHz sampling rate of analog audio recording is supported. OS Support: LINUX / win98 / XP / 2000 / Vista / Win7 / Win 10 / LINUX / OS 9.1 (the version only supports two-channel playback). If you want the fiber output to support 5.1-channel output, you must have the following conditions: 1. It must be DTS 5.1 channels, such as 3D games, HD. If it's a general MP3 or general 2-channel video, you can only have 2-channel output. Player settings are important: if it's set with PowerDVD software from the fiber output "Passthrough". This means that the sound card is only responsible for the fiber signal, not the decoding. Dispensers strongly recommend KMP this player, the function is very powerful. 3. After the fiber output, AC3/DTS decoder, or built-in AC3/DTS decoder amplifier and the like are needed. Compare with similar items. Inputs: SPDIF in, Line in, Mic in Outputs: SPDIF out, Front out, Rear out, Cen/Bass out Sampling Rate Support: 32KHz, 44.1KHz and 48KHz sampling rate for digital and analog recording USB Compatible Support: USB specification V1.1, USB audio device class V1.0 Transfer Rate: Full speed 12Mbit Size: 9x6x2cm Material: ABS Color: Blue Package Content: 1 x USB Sound Card 1 x Driver Mini CD 1 x Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.