OK. I think that there is some confusion here or the link you provided is not right. If you have a laptop, you can't upgrade your video (unless your ready to do some soldering ). If that is not the right PC (from the link), then you could go with that card if I knew the specs of your desktop.
Laptop graphics cards actually can sometimes be replaced, you just need a free PCIe slot(which Im sorry to say, probably doesn't exist for you because you do not have a discrete GPU pre-installed). If you do, call up your laptop manufacturer and acquire a compatible GPU(they are heavily price gouged, beware), then follow this article/video.