No, this is not a thread about "Does Optibay avoid warranty?" My question is, I have a failing Magsafe cord. It doesnt charge sometimes and flashing lights. I do have my AppleCare and covers the AC adapter as well. However, I want to know if when you exchange the Magsafe adapter, do you need to bring in your Mac with you? Or can I just bring my adapter and serial number? (Also some kind of identification) I do have a Optibay in my MBP 2011 and I dont want to go through the hassle of taking it out just to get the adapter exchanged. (I also did mess up on one of the screws so I have to replace that as well so it wont be noticed.) Then it comes to removing the optibay. If I do need to bring my Mac, do I just shut my mac off and remove optibay? Or do I need to manually eject it on Finder then remove it? Thanks!