It's a type of small-form-factor memory card, common in digital cameras and other devices that make files themselves (like picture files) for transfer to a PC. They're about the size of a postage stamp depending on the particular variant (standard, mini, micro).
> And these updates...are these the November monthly updates or for sometime in the future?
This one (Threshold 2) is the first big update for Windows 10. Sorta like what used to be called a "major feature update" or "Service Pack".
Microsoft has declared that from now and forever more, Windows will be "Windows" and Windows 10 is "the last release of Windows". So from now on, everything is an upgrade to Windows 10. There will be no Windows 11, or so they say.
And the monthly updates you know from Windows XP and Win7 -- not for Windows 10. They will be anytime at all, continuously. And you MUST take them if you're a regular home or small business user. No choice.
Thanks. Since I already have the November updates installed, I was curious.