Hey everyone, This may be a stupid question but you know the longer power cable you can plug into the power brick.....but are these different model to model? My old MacBook Pro one was the same as my iBook and my current MacBook Pro. I think I lost my new one - but I'm afraid to use my old one haha. Even though it fits and looks identical - is it possible these will cause my computer to melt? It's just a cable but I was wondering haha. Thanks for advice.