A:Answer update: I just installed the monitor. HDMI 1.4a supports 4k 3840x2160 30hz, with such limit, the mice pointer a little bit does not move smoothly while doing programing edit. I have to switch to 2k 2560x1440 60hz supported by HDMI 1.4a, then everything works fine. Overall, LG 24UD58-B is doing great, even I can only enjoy 2k 2560x1440 60hz due to HDMI 1.4a.