I'm in a market to buy a new Mac Mini. I'm looking at my options and I met a seller that is willing to sell an used Mac Mini Server for the price of a regular Mac Mini. I have no idea what it is and don't even know why I'm considering it, but for $500 I'm curious. What is the biggest difference between a Mac Mini and a Mac Mini Server? My online search comes up with reviews of Mac Mini Server "as" a server. I'm not looking to do that. Just thinking of using it as a desktop that I would use it with Mac Mini. No optical drive, lack of expansion, I get all that. Can I use it as a stand alone desktop? It I were to buy it for it's full retail it would be a waste of money, but I can get it cheap.