There's a simpler but similar problem with HDMI cables now. Over the years new versions of HDMI keep coming out with higher bandwidth to support higher resoluti

There's a simpler but similar problem with HDMI cables now. Over the years new versions of HDMI keep coming out with higher bandwidth to support higher resolutions. But there's no way to look at a cable and tell what HDMI version it supports. These days HDMI 2.0 is minimal but you want HDMI 2.1 if you want to support HDR10 or anything over 4K@60. There's also a bunch of side features in HDMI (like CEC) that are not reliably implemented.