Saw this post recently joking about "vintage sound" and kinda caught myself mid chuckle.
While the idea of using older USB for the quality of audio is ridiculous, it reminded me that I'm still rocking Firewire 400.
Firewire 400 was a feature of my MOTU soundcard, then my Mackie mixer.
I've been using 400 ports for about 15 years.
Recently my Mackie's "Hi-Z" inputs weren't working and it turns out the parts aren't easy to replace.
So I bought a brand new Mackie mixer, which had been sitting on the shelf for a while.
It's old enough to still have Firewire 400 inputs.