HDMI Matrix 4X4, Support 4K*2K, Bi-Directional IR Control, Support 3D HDMI 1.4; Support Hdcp1.4 High Definition Matrix 1.4 Edition Support 4K 2K 3D TV Splitter - China HDMI Matrix and Video Matrix price | Made-in-China.com
Comprehensive Pro AV/IT 4K 4x4 HDMI Matrix Switcher CSW-HD44014K
Chester Digital Supplies || Labgear HDMI Matrix Kit 4x4+4
Amazon.com: OREI 4K 4x4 HDMI Extender Matrix - UltraHD 4K @ 60Hz 4:4:4 Over Single CAT5e/6/7 Cable with HDR Switcher & IR Control, RS-232 - Up to 230 Ft - 1080P Downscale -
Comprehensive HDMI 4x4 Matrix Switcher with RS232 CSW-HD440 B&H