As far as I can tell these are all the same hardware just different enclosures. I'm not sure why Nvidia went this route given that they have a first party device. Usually you only see this when the original manufacturer doesn't want to be in the distribution or support game.
If this is anything like their consumer graphics cards, the first-party version will only be available in the dozen or so countries where Nvidia has established direct distribution channels and they'll defer to the third parties everywhere else.
