2.0 1.1 System Compatibility: Works with any 2.0 1.1 Systerm USB device,such as PC/laptops/tablets/computer Excellent Sound PerformanceCombined with two high quality powerful speakers,this sound bar has a fantastic 3D stereo surrounded sound performance, Flexibly placing Fashion and portable design suits any usb device.This computer sound bar speaker can perfectly all computer and make your home your home elegant.Make you have a wonderful hearing experience, Enjoy your favorite Music, Movie. Relax your life Easy to useJust plug into an available USB port and enjoy the rich stereo sound. Tips:USB computer speaker does not have a volume knob Space-saving and Slim DesignMini size(3.9x3x1.2 inch), comes with space-saving size are designed and engineered to fill your office , study space or any nook at home with music, movies, games, audio book or online lectures at ease Suitable for everyonePerfect for your home,your office,school and any other place,also a perfect gift for your friend and your family. Specification: -Color:Black -Size:Size:3.9x3x1.2inch -The cable length:1.2m/47inch -Total peak power:0.5Wx2 -Voltage:DC 5V -Speaker system: 2.0 portable USB speakers Package Include: 1 x USB Mini Speaker