USB went from 1.0, to 1.1, to 2.0, to 3.0. 3.0 got renamed 3.1 Gen 1, and 3.1 Gen 2 got introduced. Then 3.2 came around, which renamed 3.1 Gen 2 into 3.2 Gen 2x1, and introduced 3.2 Gen 1x2 and 3.2 Gen 2x2. USB 4.0 introduces USB 4.0 Gen 2x2 and USB 4.0 Gen 3x2.

This is ignoring the battery charging, alternate modes, etc. Just the main USB versions.

A pet peeve of mine is when corporations try to use "One" as a brand. Not only is it horribly uncreative, it's been done countless times by countless companies and it never sticks. They're trying to get across the idea that this one product does everything, or that different products/offerings are now unified. But "One" is lazy and unoffensive in the corporate world.

Steve Ballmer wanted a "One Microsoft", SkyDrive being renamed to OneDrive was partly due to this, and was hoping people would call the XBox One "The One".

I'm really disappointed that after 360 wasn't delta.

Then the series would spell out X □ ○ ∆ .