The refurbished computers DO NOT come with the Key, which means that you cannot use all of the nifty Windows features.  Not a biggie for me because I use Chrome for my internet and Google for my search engine.  There were also no directions, including installation directions or manuels.  I found the wifi adapter only because it was taped to the computer.  It was just like a little USB plug, like the kind that comes with your wireless mouse.  I plugged that in after I discovered that the wifi was not working...But I plugged that in and everything worked like a charm.  If you are dreading having to upgrade from your Windows 7 or Windows VISTA computers because they are no longer getting updates, this is the way to go.  For less than $100 I was up and running on a computer with Windows 10.  Very happy that I went this route.