There's even cheaper versions of this now, "fiber" HDMI cables with the electronics in the HDMI plugs themselves, no additional power required. They go up to 10

There's even cheaper versions of this now, "fiber" HDMI cables with the electronics in the HDMI plugs themselves, no additional power required. They go up to 100m length. I do wonder how these work, since I've never seen a good teardown of one.