I plugged everything in and it works great. I have an older Dell monitor that is perfectly compatible with this, just plugged it in with the blue cable end in back of computer.  Also I got a free USB keyboard and USB mouse, no need to set up wi-fi, mine's set up with an ether cable. I'm so happy I went with this refurbished computer! No need to register Windows 10, comes installed and ready to go! Great deal and I would buy refurbished again.