NOTE: You need to use a standard DP1.4 cable to connect this switch to work properly, otherwise it will flicker or the screen will turn black. Two displays CANNOT display simultaneously. While connecting to Source or Display, you must use the usb cable to power the splitter, If you do not power the splitter, your source or display can not show anything. Do not use too long cable(total 3m) for connection between the switcher and your devices. High ResolutionSupports 8K@30HZ, 4K@120Hz, 1080P@240Hz, 3D resolution and HD audio, the DP switcher will brings you a luxurious and wonderful audio-visual experience. Plug and PlayExternal power required, the DP selector box is easy to setup and operate. Note: While using, press'select'Button to switch signal between two sources or displays, the indicator lights show the working status, two displays CANNOT display simultaneously. High SpeedThis DP splitter provides bandwidth data transmission up to 32.4Gbps.