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. After the switch works, there will be an indicator light showing the currently connected channel. default output is channel 2. When you need to switch, press the button, and the switch will be completed within 1 to 2 seconds. | Other details: It fully supports USB3.0 protocol, the transfer speed can reach up to 500MB/S (theoretical full speed, generally at least 100~200MB/S, depending on your device), the switch itself does not need to install a driver, plug and play (Whether the device on the switch needs to be install driven depends on the device itself), it can support windows, OSX, linux and other devices. | Warranty and Package: Note: If the connected device has a device with high power requirements such as a large-capacity mobile hard disks, Digital Video Cameras, SSD etc, external 5V adapter is required. Otherwise no need to connect to external power. We provide 6 months warranty and lifetime technical support for this USB switch.Package include:1*usb 3.0 switcher,2* 59 inch long USB 3.0 Cable.1*User Manual.Any problem,pls contact us to solve.