1.BiDirection DP Switch: The DisplayPort Switcher allows you to connect two DP sources to one DP display or connect one DisplayPort source to toggle between two displays. (Two displays CANNOT display simultaneously, use the 'Select' button to switch between two displays.) (While connecting to Source or Display, you must use the usb cable to power the splitter, or your display will not show anything). Do not use a cable longer than 3 meters in total for connection between the switcher and your devices. 2.16K DP 1.4 Splitter: Supports 8K@120Hz, 4K@240Hz, 1080P@240Hz resolution, provides you with transfer rates up to 40Gbps and backward compatible with all previous DP standards. (You need to connect a standard DP 16K cable to enjoy visual effects.) Note: We recommend that the sum of the wires at both ends, that is, the input and output wires, should not exceed 3 meters. If it exceeds 3 meters, the signal may be shielded. 3.16K DP Switch: Supports 8K@120Hz, 4K@240Hz, 1080P@240Hz resolution, provides you with transfer rates up to 40Gbps and backward compatible with all previous DP standards. (You need to connect a standard DP 16K cable to enjoy visual effects.) If the screen flickers during use, please try to plug it in again and use a shorter cable connection.