Introduction： 2 In 4 Out USB3.0 Sharing switch box enables two computers to share up to 4 USB peripheral devices, Such as mouse. keyboard, flash drive, scanner, printer, USB hubs and more at speed up to 5Gbps. You can easily switch to any of your connected computers by pressing the manual button. It is a cost effictive solution for those who work with more than one competer. Specification： Input: 2x USB3.0 A female for PC Output: 4x USB3.0 A female for USB peripheral devices Compliant with USB3.0 specification ，backwards compatible with USB2.0/1.1 Supports data transfer rates of up to 5Gbps Plug&play, no drivers needed Supports Mac 0S/Windows/Linux/Chrome OS etc. Micro USB 5V port is optional for power. Note: USB1 is the default input port and you can switch to USB2 by the manual botton Package： 1 * USB3.0 Sharing switch box 2 * 1.5 meter 3.0 data cable 1 * 1.5 meter power cable 1 * instructions