Features: new and External USB virtual 8.1 channel sound card converter adapter. It can work with either desktop or laptop, it extends your stereo speaker or earphone to 8.1 channel environment, giving you sound enjoyment. USB 2.0 full-speed, easy to use, plug and for play, instead of the traditional sound card. Using the most advanced technology of Xear 3D. Multi-function keys, support microphone-mute, speaker-mute, volume-up, volume-down, former-song, next-song and stop/ start. Multi-channel technology, strongly 8.1 channel dynamic sound. Through the line-in interface, external connect recording equipment separate recording, and you can enter other audio sources. Support various sound formats/ music software output. Fit for DVD, digital products, music, game and online use. Compact, portable design, convenient to carry and store. Supports for Windows 98SE/ ME/ 2000/ XP / Vista/ WIN7/ win8/ Server/ MacOS 10 or higher. Specifications: Support channel: 8.1 Color: black Interface Type: USB Size: approx. 61x28x12mm/2.40x1.10x0.47in Note: Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1 x USB sound card