Type: External Interface Type: USB Item Condition: Product Name: 7.1 aluminum alloy USB sound card Weight: 50g/pcs Support equipment, audio, microphone, headphones and other equipment Supported Channels 7.1 USB to audio input and output interfaces Role 1: When the computer audio interface can not be used, you can use our sound card, plug in the computer USB interface, you can then connect the microphone and other equipment. Role 2: can be a good insurance policy of the original computer audio interface 1, mini easy to carry 2, the appearance of tall 3, plug and play 4,7.1 channel, sound quality is particularly good 5, support all systems colour:black Material:Aluminum alloy size: 4.3 * 2.9 * 1.1cm Package Contents: 3 * 7.1 USB sound card 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.