Ok, this is a pretty dumb question, but I want to know the answer because its bugging me. I have a powerbook g4 12". It came with the AC Adapter that is a box, and it plugs into the computer and then again into the outlet. It also came with this other cord that is a three pronged plug and it plugs into the outlet and where else??? the other end of it is something that I can't figure out how i am supsed to use it. Thanks for the help!