USB 3.0 Switch: This allow 2 computers to share 1 USB device, such as printer, scanner, mouse, keyboard, card reader, USB flash drive and other USB deivces, or share one computer between 2 USB devices.LED indicator allows you to know which computer is in control . Stable Fast Transfer Speed: Data transfer speeds up to 5Gbps with USB 3.0 cable & devices.Backward compatible with USB 2.0/1.1 devices. Extensive Compatibility: Plug and play.Driver-free for Windows, OS, Linux and Chrome OS etc. Increased Work Efficiency: Without constantly swapping cables or set up complicated network sharing software. It's a great for use at office or home if you need to switch between computers. Power Adapter: note that when using a high-power USB device, external 5V adapter is required. (Power adapter not Included). Colour: black Material: plastic Package Contents: 1 x USB 3.0 switcher 1 x USB cable Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.