This USB 3.0 Switcher Selector allows one button swapping between 2 computers to share 4 USB peripheral devices without constantly swapping cables or set up complicated network sharing software; | Ideal for sharing devices such as printer, scanner, mouse, keyboard, card reader, flash drive and other USB deivce between 2 computers; If the switcher doesn't work on external hard disk, please connect the device with Micro USB Cable for extra power. | Plug and Play, driver-free for Windows 10/8/8.1/7/Vista/XP and Mac OS X, Linux, and Chrome OS; External Power is unnecessary.Fast data transfer up to 5 GB/s and backward compatibility USB 2.0 and 1.1 specifications. | Button and LED indicate lights, you can easily switch between 2 computers by a single click on the button with LED indicating the active computer; | Package includes: usb 3.0 switcher*1pc, 1.5m USB 3.0 Cable*2pcs. Important Note: Please use Standard 5V Adapter( Not Included ) for powering. Any charger with higher voltage output is NOT allowed and may affect the product performance.