SandSii :
CropEditPaste :
You only need the wifi adapter and the device drivers for that adapter.
What are device drivers? And how can I get them?
So when you put in a new graphics card or wifi adapter, the computer doesn't have the instructions to make them function properly. This was a big issue back in the 90's and early 2000's but not so much these days, thank goodness. Drivers are the "instruction booklets" so to speak, that your computer reads to make the different components run properly. Without drivers, the component(s) may not work.
When you put it in your computer, in most cases Windows will recognize the card and download the drivers automatically, but if not, then on the manufacturer's website they have them listed. Here's the link for the card you want to purchase:
http://www.tp-link.com/us/download/TL-WDN4800.html#Driver