Specifications: The USB Virtual 7.1 channel sound adapter is a highly flexible audio interface which can be used either with desktop or notebook systems. No drivers required, just plug and play for instant audio playback, also compatible with all major operation systems. USB bus-powered mode, no external power required. Compatible with USB 2.0 full-speed(12Mbps) specification. Compatible with USB audio device class specification 1.0. Compatible with USB HID class specification 1.1. Type: USB Sound Card Cover Material: Plastic Connectors: USB Type-A, Stereo Output Jack, Mono Microphone-Input Jack Function Keys: Microphone-Mute, Speaker-Mute, Volume-up,Volume-down LED Indicators: Microphone-Mute Status, Activity Support: for Windows 98SE/ME/2000/XP/Server 2003/Vista, for Linux, for MacOS Features: Driverless, Easy to Use, Good Quality Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Package Includes: 1 x USB Sound Card