The Infocrest Technology has made a key enhancement on the 5th generation video wall display providing 4K video input capable HDMI and Displayport with video wall processing capability. Through built-in Displayport or HDMI input port, video signal up to 3840x2160 at 30Hz can be transmitted and the signal can be loop-out through Displayport output port providing 2-by-2 video wall with each screen displaying 1920x1080 pixel resolution video. With the enhancement, only one 4K video input line is needed to display 4K resolution video on 2-by-2 video wall.