This USB switch allow 2PCS share 4 USB device, such as printer, scanner, mouse, keyboard, card reader, flash drive and other USB deivce. USB 3.0 Switcher supports ultra-fast USB 3.0 data transfer, and is backward compatible with USB 2.0 and USB 1.1 devices. Save your time and improve the efficiency. One button switch, allows one button swapping between 2 computers to share 4 USB 3.0 peripheral devices. Just connect the keyboard and mouse to the sharer, then one set keyboard and mouse can control two hosts. Great compatibility, driver-free for Windows 10/8/8.1/7/Vista/XP and Mac OS X, Linux, and Chrome OS, simply use just plug and play. Support for wireless mouse and mechanical keyboards. Compatible with all computer operating systems. It's a great choice for office!!!