Features: 1. High performance 3D stereo 7.1 channel USB audio adapter. 2. Convert stereo speaker or headset to 7.1 channel. 3. It can work together with both desktop computer and laptop. 4. Plug and play, no driver required for Windows 2000 / XP / Server 2003 / Vista, for Linux, for Mac OS. 5. Powered by USB cable, no need of external power supply. 6. Compatible with all major operating systems. 7. Lightweight and compact, easy to carry. Specification: Condition: 100% Brand New Item Type: External Audio Card Material: ABS LED Indicator Light: Microphone-Mute Status, Activity USB 2.0 Full-Speed (12Mbps) Specification USB HID Class Specification 1.1 Connectors: USB Type A, Stereo output jack, mono microphone input jack Function Keys: Microphone-Mute, Speaker-Mute, Volume-Up and Down Color: As Pictures Shown Weight: Approx. 21g Package List: 1 * External Audio Card 1、High performance 3D stereo 7.1 channel USB audio adapter. 2、Convert stereo speaker or headset to 7.1 channel. 3、It can work together with both desktop computer and laptop. 4、Plug and play, no driver required for Windows 2000 / XP / Server 2003 / Vista, for Linux, for Mac OS. 5、Powered by USB cable, no need of external power supply.