In this video, I tested the OREI UHD48-EX230-K in a real multi-room setup—exactly the kind of situation where HDMI runs get messy fast. If you’ve got multiple sources like a gaming console, streaming box, Blu-ray player, and a PC, and you want clean 4K across different rooms, this 4x4 HDMI matrix extender is built for that. It’s not flashy, but it feels like install-grade gear that’s meant to run continuously without drama. I break down the layout (four HDMI inputs with HDMI and CAT6 outputs) and why using a single Cat6 cable is such a win for in-wall runs. The power-over-cable support is a big deal too, because the matrix can power the receivers through the same CAT cable—so you’re not stacking power bricks behind every TV. Performance-wise, I focused on stability and real-world switching: full 4K@60Hz at 18Gbps, fast source changes, and consistent image quality across displays. HDR support (HDR10, HDR10+, Dolby Vision, HLG) holds up, audio passthrough stays clean, and the 230ft range over Cat6 stayed stable for me with no flicker or dropouts. The killer feature for mixed setups is per-output downscaling, so 4K and 1080p displays can coexist without constant reconfiguring.