The IOGEAR 2x4 USB switch is a USB 2.0 peripheral sharing switch allows two computers to share up to four USB devices, such as keyboard, mouse, printer, portable hard drives, etc.This device eliminates the cost to have multiple sets of USB devices for each computer. It also cuts down cable clutter of your work area, as well as the trouble to move from one computer to another. Switching from computer to computer is easy with the press of a button with LED to indicate the selected computer. You can also charge and sync your mobile devices with the computer through this unit.This device is USB 2.0 compliant with a data transfer rate of up to 480 Mbps, it is hot pluggable like most of the USB devices. It came with over current protection to prevent your devices being damaged by sudden current change from the surrounding environment.By connecting a set of keyboard and mouse on this unit, you can use it as a mini USB dock to control 2 laptops and allowing them to share other USB devices.The molded cable design for the computer side eliminated needs for more USB cables and made field installation quick and easy.