The whole "Chromebox" nomenclature is about as meaningful as the "Steam Machine" or "Mac" designations. If you build a designated gaming PC with Steam, it's a Steam Machine. If you've got a device running MacOS, it's a Mac. There's no real fanfare to the thing, it's just a nominative way to cover the base specifications of a device.

> It's hardware in a form factor I like. What can I use it for? Can I install any OS I want?

I'll be damned if a single product page for consumer hardware tells me any of those things anymore. I'd happily support legislation that pushes manufacturers to disclose that info, though.