Re:USB3: Why it's a bit harder than USB2
by usr1106 on Wednesday October 07, 2020 @08:41PM
(#24714475)
> After all, wouldn't you expect most digital ports to be binary: either be plugged in or not?
No. USB-A plugs for 2.x have 4 contacts that extend close to the outer edge. USB-A plugs for 3.x have additional 5 contacts close to the inner edge. If you don't insert the plug fully, you physically just get a USB 2.x connection. Nothing magic there.
No. USB-A plugs for 2.x have 4 contacts that extend close to the outer edge. USB-A plugs for 3.x have additional 5 contacts close to the inner edge. If you don't insert the plug fully, you physically just get a USB 2.x connection. Nothing magic there.
https://www.techspot.com/guides/235-everything-about-usb-30/
There are more subtle problems with 3.0.