Features: Connector: USB Type A socket, 2 stereo output jacks, 2 mono microphone input jacks. Includes xear 3D, virtual 7.1 channel sound simulation software under for Windows XP/Vista. Meet the first-class 1.0 USB audio device specification. There is no need to install the driver in the following operating systems: Windows98 / SE / ME / 2000 / XP /Server 2003 / Vista, Linux / MacOS. USB bus-powered mode, no need for external power supply. USB2.0 pure digital audio output, virtual 7.1 channel processing capability (actually 2.1 channels), the effect is similar to the sound card integrated on the motherboard. brand new and high quality Using the CM100B sound card chip, it can be used without a driver, or it can be used to obtain for stronger functions by installing a driver, with sound effect settings and sound field settings, and good compatibility. Specifications: Material: Aluminum alloy Size: approx. 7x2.6x1cm/2.76x1.02x0.39in Colour: Black,Gold ,Silver Package Includes: 1PC X Sound Card note: No retail package. 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!