HDMI Matrix Switch 4x4 SGEYR 4 in 4 Out HDMI Switcher Splitter Audio Video Distributor Selector Box with IR Remot,RS232 Switches|HDMI Cables| - AliExpress
Blackbird 4K 8x8 HDMI Matrix Switch with HDMI 2.0, Supports HDR, 18Gbps, 4K@60Hz YCbCr 4:4:4, 8 S/PDIF Outputs, HDCP 2.2, EDID, IR, RS-232, TCP/IP Web based GUI - Monoprice.com
8x8 HDMI Presentation Switcher, 4K 60Hz, HDR | Tripp Lite