Key features: -compatible Switch: The -compatible switcher allow you to connect two -compatible source to one -compatible display. 8K -compatible 2.1 switch: Support 8K@60Hz, 4K@120Hz, resolution, provide you with transfer rates up to 48Gbps and backward compatible with all previous -compatible standards.(You need connect standard -compatible 2.1 cable to enjoy visual effects) Plug and Play: External power required, the -compatible selector box is easy to setup and operate. Simply press the button to swap signal within one second and the indicator lights show the working status. While connecting to Source or Display,you must use the usb cable to power the switch,If you do not power the switch,your source or display can not show anything. Note: 1:Please pay attention that this switcher is not a bi-directional switcher,you can only use from two source to one display,but you can not connect from one source to two displays,only 2in 1 out,not 1in 2out. 2:If you need to use our switcher to output 4K@120Hz and 8K@60Hz, please make sure that your -compatiblecable, -compatible signal source and -compatibledisplay all support the above resolution Material:plastic colour:black Package Contents: 1 * -compatible switch unit 1 * USB cable Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.