Description:  1.This USB Switch 4 Port device allows up to 2 users to share 4 USB 2.0 peripheral devices, such as printer,scanner,mouse,keyboard or usb dicsk etc without the need to constantly swap cables or set up complicated network sharing software. It's a great for use at home if you have multiple PCs or Macs,  2.The USB sharing switch allows you to combine with a USB hub to share multiple devices e.g. printers, scanners, etc. Bus powered with no external power supply required for low power consumption devices. Equipped with a micro USB 5V jack, you can connect a power adapter(not included) to ensure the better performance of the high power consumption devices,    3.Button and LED design,you can easily switches between systems via push buttons with LED indicating the active computer,    Specifications：  Material : Alumminum alloy+nylon braided,  Application : Control 2computers by 1set of keyboard and mouse,  Printer Sharing : Sharing printer/Scanner by 2computers,  Driver : Plug and play,  Work LED : 2 Indicator light,  Accessories : 1x2 in 4out USB Sharing Switch,  2xUSB data cable,    Package included： 1 * 2 in 4out USB Sharing Switch,  2 * USB Data Cable,