NVMe: Speculations on why M.2 won out over U.2

Someone I know online was recently reading it, and he mentioned that he’d never heard of the ‘U.2’ connector that I talked about in that entry and that in fact I described as the way that future NVMe SSDs would be connected to your machine. In an aside in that entry, I wrote:

In 2015 and even 2016, U.2 was a reasonably big thing; you can read one example of it (and see some pictures of a U.2 connector and U.2 SSD) in places like this April 2016 article. U.2’s fade out evidently didn’t take all that long either, since when I did a late 2017 entry on sorting out M.2 and NVMe, it wasn’t even on my radar and certainly didn’t show up on any of the motherboards I looked at at the time.

Source: utcc.utoronto.ca