Comes with a headphone output for private audio listening. Use of safe and reliable USB B type port, to send USB cable, without power, plug and play. Enable you to output to the amplifier, an integrated sound card as a computer upgrade products, can be connected to the decoder, be sent back to the level of sound quality. (5.1 channel is incompatible, please set the audio output to PCM or LPCM). Compatible with both for XP and for OS-X, For playback in for . Compatible with for , for , for ,which can be connected your headphones by USB for playing games. Provides the easiest way to convert your PC into a hi-end music server. Join who have already upgraded. Once you get used to playing CDs from your computer, you'll never want to go back to a traditional port. Input: USB Output: coaxial/optical/3.5mm stereo/R/L System requirements: for 10 for 8.1/8 for 7 for Vista for XP for or above for , for , for for Windows2000 Distortion: + N: 0.006% (RL 10 k) SNR: 102db Dynamic range: 102db Frequency Response: 16 Bit 32k, 44.1k, 48k Operating Temperature: 0 to 70 Connection and Operation 1. 5.1 channel is incompatible, please set the audio output to PCM or LPCM. 2. Connect the USB Audio Sound Card to the USB port on your computer via the included USB cable. 3. The automatically detect this device. 4. Connect the speaker/earphone and microphone to the product. Color: Black Material: Metal Package Contents: 1 x Audio Converter 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.