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Some basic info about USB
(lemmy.world)
This is a most excellent place for technology news and articles.
Meh, while there really could be less. At least they are all physically compatible. And backwards protocol compatible to the lowest common denominator. Which is a huge step forward.
Seriously, as an IT person, I still never know what most of my USB ports are capable of, but I'm glad they are backwards compatible. If something is slow, then I try a different cable and port.