I honestly can't understand why Apple designed Macs with flat cases. They were on the right track with the II and the models that followed with slots for expansion cards and cases tall enough to put them in, but when they started making Macs with flat cases they pretty much destroyed their expandability. You could sneak a couple of things in some of them if you were clever, but most people didn't even bother to try. What was the point of going from closed box, to open box, to very nearly closed box?? It was a major step backwards.