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HDMI Matrix 4x4 - 4K60 HDR | WyreStorm
8x8 UHD 4K2K HDMI Matrix Routing Switcher w/ Full EDID Management/Learning w/ Preview Port | ShinybowUSA
Monoprice Blackbird 4K 4x4 HDMI Matrix, 18G, 4K@60, YCbCr 4:4:4, EDID, 4K to 1080p Downscaler, IR - Monoprice.com
Comprehensive Pro AV/IT 4K 4x4 HDMI Matrix Switcher CSW-HD44014K
4K HDMI Matrix Switch 8X8, 4K@30Hz Rack Mount Switcher & Splitter with Backlit R 313028933923 | eBay