4K@30Hz High Resolution - 4K HDMI Splitter supports resolution up to 4K(3840x2160)@30Hz, backward compatible with lower resolutions, such as 1080P,720P. HDMI Splitter 1 in 12 Out - 1x12 HDMI Splitter can transmit audio and video signals from 1 HDMI input to 12 HDMI output displays simultaneously, no lag, no flash.