?2 in 4 Out USB Switch Selector?: This USB switcher box allows to share several USB peripherals between 2 computers without the need to constantly swap cables or set up complicated networks sharing software, which saves desk space, It's great for use at home/office if you have multiple computers or Macs | ?4 USB device sharing between 2 computers?The USB switch Share the keyboard with two computers and has 4 port for USB devices such as share USB mouse, keyboard, flash drives, card reader, printer, scanner, webcam, game controller, Improve working efficiency without replacement device or computer | ?Great Compatibility?This USB 2.0 sharing switch works with great compatibility, driver-free for Windows 10/8/8.1/7/Vista/XP and Mac OS, Linux, and Chrome OS, simply plug and play | ?One-Button Switch?: this device will do is allow you to share a keyboard, mouse, and 2 more USB devices. Button and LED indicator lights, you can easily switch between 2 computers by a single click on the button with LED indicating the active computer; NOTE:This device is not for switching or sharing monitors | ?STABLE Connection and Service?: USB sharing switch with a separate micro usb female port for option power, When using a high-power USB device(such as HDD, Digital Video Cameras, SSD etc),external 5V adapter is required (Not Included). Package include: 1x USB switcher,2xUSB Cable. Please don't hesitate to contact us to solve it if have any problem