I was having some trouble installing a network card on my home server. It wasn’t being autodetected. I’m weak on Linux hardware stuff, and networking in particular (since it’s always *just worked*), so this was starting from scratch. More here
I had a few extra handicaps, in that I didn’t have the orginal box, and this card was one I’d bought months ago, physically installed, and forgetten to configure, so my bad! I didn’t even know the model number!