HDMI Splitter 1 in 12 Out, Support 4K 30Hz & 3D Blue-Ray Duplicate/Mirror 1 HDMI input audio and video signal to 12 HDMI output displays. 4K@30Hz High Definition Resolution: 4K HDMI Splitter can max resolution up to 4Kx2K (3840 2160) @30Hz, and support 3D Blu-Ray.