If the resolution of 3 display devices support different resolution, what resolution can be displayed?
It will display with lower resolution, for example: TV 1 support 4K, TV 2 support 1080P, TV 3 support 720P, all TV will both display with 720P.
How long can HDMI cables be used?
For 4K resolution, suggest use HDMI 2.0 cable, the length not excess 5m/17 feet; for 1080p resolution, suggest use HDMI 2.0 cable, the length not excess 15m/50 feet.
Does it support extended display?
This 4K@30Hz HDMI splitter only support mirror/duplicate the screen, not support extended mode.