Meh, I have at least two hdd enclosures that use that cable.

Standards don’t mean that much when the hardware manufacturer just doesn’t care

It’s a ufw rule. I also have two iptables rules but they have nothing to do with this

But in this case it’s something it should do, it’s a rule not behaving like it should (probably because I’m missing something)

I did that for a while, about two years ago, I stopped not because I had problems, but because I’ve borrowed an AMD GPU from a friend since. At the time I had a very good experience, lightyears better than regular Nvidia, but right now, with explicit sync, I’m not sure it’s that much of an improvement anymore.