What is it: With the help of two independent USB 3.0 transmission circuits, The USB kvm switch can switch multiple devices between two computers at the same time with one button and without plugging or unplugging any cables. If you need to work or play on two computers but don't want to prepare two sets of input and output devices, then this KVM switch is a good choice for you. What can it do: This USB 3.0 Sharing Swither can Share your input and output devices between two computers, not only mouse and keyboard, but also printers, mobile hard drives, USB flash drives, game controllers, bluetooth adapter and wireless adapter or other devices that require USB connection. How it works: Simple, you only need to connect the devices that need to be shared to the 4 front USB ports, and then connect the supplied USB cables from your computers to the two USB ports on the back of the switch, and the setting is complete.