Only if it is a macOS compatible one. Research that before buying. You can't use any Intel wifi cards, they just don't work.
Ok thhanks
Will a wifi card fit in that PC you gave me a link to. It looks like it has one of those external slots but im not sure
I've never owned a 780 so not sure either. You could look for a 780 replacement motherboard on Ebay and then look at the pictures to see what options you've got. Or go to the Dell website for complete specs on that model.
