4K HDMI Video Booster. VBSTM-K01 is an HDMI booster, supports Max. up to 4K 30Hz resolution extension up to 15M,1080p 25M. VBSTM-K01 could be powered by HDMI source, no software or driver required, HDMI 1.4 and HDCP compliant, built in Auto EQ sharpness function for the best image clarity output.