Wow, an ad slipped inside software. That's not unusual...
That reminds me - the recent Samsung Magician update included a bloody 980 Pro ad in the bottom left corner of the app's window... /sigh
Fit? Sure.
Actually recognizing the card? Probably not, if your mobo isn't even PCIe Gen 2.
Even if it did recognize it, the Gen 1 speeds are going to hurt performance.