ABLEWE USB Switcher Introduction: All ABLEWE product comes with 18 month warranty and free lifetime technical support. This ABLEWE USB switch is an excellent choice to expand your laptop’s USB 3.0 port into four, allows 2 computers to share 4 USB Devices, can easily switch between 2 Computers via a push button with LED indicates the active computer, ideal for sharing a printer or scanner in a small office environment. It's also great for use at home if you have multiple PCs Features: 1.Expand your laptop’s USB 3.0 port into four port 2.2 Computers Sharing 4 USB Devices by manually selected the button. it does not automatically switch between ports 3.USB 3.0 for faster data transmission. 4.No driver needed, plug and play. 5.External hard-drives should be connected to an external power source. 6.It will not charge your devices, it will only sync and transfer data. Important Notice: Please use Standard 5V Adapter(Not Included) for powering to ensure better performance of the high power consumption devices. Any charger with higher voltage output is NOT allowed and may affect the product performance. Use tips: 1.Connect your computers by using the provided type A to type A cable. 2.Connect your USB devices to any of the four USB ports. The USB devices could be USB flash disk, mouse, keyboard, printer, scanner and etc. 3.Press the switch button to select the computer you need to use. Package Contents: 1USB 3.0 switch 2USB cable(type A to type A) 1User Manual