HDMI SPLITTER 1 in 2 out,4K HDMI SPLITTER for Dual Same Monitors, Mirror Only,Not Extend, HDMI SPLITTER for 4K,1080P,3D

HDMI SPLITTER 1 in 2 out,4K HDMI SPLITTER for Dual Same Monitors,?Mirror Only,Not Extend?, HDMI SPLITTER for 4K,1080P,3D,?Just Duplicate,Don’t…