Hdmi Matrix Switch 4x4 Sgeyr 4 In 4 Out Hdmi Switcher Splitter Audio Video Distributor Selector Box With Ir Remot,rs232 Switches - Audio & Video Cables - AliExpress
Amazon.co.jp: TESmart HDMI Matrix 4 in 4 Output 4X4 HDMI Switcher HDMI Splitter 4K@60Hz for 4PC4 Display HDMI Switcher HDMI Sputter Video Wall Function EDID Function RS232 LAN Port Scene Preset Function
Amazon.co.jp: TESmart HDMI Matrix 4 in 4 Output 4x4 HDMI Switcher, HDMI Splitter for 4K@30Hz 4PC4 Display, HDMI Switcher, HDMI Splitter, Multi-View Mode, EDID Function, Scene Preset Function, Memory Function, RS232 Port