You haven't said (at least I don't see it) what O/S your are using, so finding drivers for an old network card might be tricky....most desktops these days (and for the last 15 or so years) have the ethernet adapter built in to the motherboard and come with a disc of drivers for it...PCI cards are really old technology. Some specifics, particularly about which O/S you use, would be helpful here. But since you mention 'cable,' I'm guessing you are using ethernet, not WiFi. But you apparently do have Wifi, even if you are using cable ethernet. I believe they still make USB-Ethernet and USB-WiFi external adapters, or at least they are available...try eBay. And USB 2 will work if you have the right drivers. If you find either one, ask the seller if it comes with the right drivers for your O/S, or get the model number of the device and see if you can find the right drivers on line. Some adapters will run on XP/NT/2000 and others require at least Win7 or beyond. There are lots of sites that have drivers for practically anything. From your description, I wonder if you are still running XP or even something older than that, in which case you may have difficulty finding ANYTHING for that old an O/S, but USB might be your best bet. If you are using something that old, you probably don't have USB 3, but 2 will work.