A:Answer I was in the same boat (3 ports were outdated, 1 supposedly supported 4K but not HDR). As much as I thought and wanted my TV to work, there was nothing to do. So I got this kit, which did the trick. It will update all 4 ports to 4K HDR. Keep in mind you need HDMI AND HDCP versions both working in your favor. So for PS4 Pro and Chromecast Ultra, I can confirm this kit is good. That said, there's a brand new HDMI version on the way later this year. If you don't want to be left behind again in a few years, you may want to think about holding off and upgrading all your devices next year (things will start to be 10K).