I am looking into using an external with my macbook. I am just very unsure as to how the whole process works. I know you connect it via the adapter that you have to buy separately, I'm just unsure as to what you do after that. Do you close the computer and use an external keyboad/mouse as well? Or do you keep the computer open and use the keyboard/trackpad? I'm assuming its the former, but I'm not quite sure how that works. Any help would be greatley appreciated.