Assuming the 2012 and 2010"s are the same (and I believe they are), there are two screws on top in that little tray. Pull up the rubber bottom and undo those. Then, gently pull the plastic trip off around the AC outlet. There is another screw under that. Once you've done that, a gentle pull on the plastic surround will pop it off. I think it's easies if you start from the bottom it's easier. Hope that helps.