USB KVM Switch box 2 in Sharing 4 Devices USB output , Sharing documents and content between 2 Difference operating system Product Name : USB KVM Switch with Switch Button Interface : 2 USB In / 4 USB Out Data transfer : Universal Serial Bus USB3.0 data 5Gbps Switch button : 1 button for switch between two computers Indicator LED : individual Operating Blue Light Power : Powered by 5V2A adapter Meansure : 99*50*14.2MM How do you share peripherals between Two Computers ? A USB switch allows two or more computers to easily share a USB peripheral such as external hard drives, printers, and scanners. The USB switch saves you cost and space on additional USB devices. On the other hand, it eliminates the need to unplug the USB peripheral from one computer and then plug it into the other. It is an excellent choice to share 4 USB devices between two systems.it's ideal for a printer or scanner in a small office environment. It's also great for use at Home , if you have multiple PCs or Macs. Features: 1.Expand your laptop's USB 3.0 port into four port 2.Two Computers Sharing 4 USB Devices by manually selected the button. it does not automatically switch between ports 3.USB 3.0 for faster data transmiion. 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. 7.Good design as corporate gifts.