The MiniDrive | microSD Adaptor | Universal Nano for All SD ports Quickly, simply, and discreetly increase the data storage space in any MacBook through use of a microSD. Sits hidden within and securely into the SD slot of all modern (2010+) MacBook computer. Fits: MacBook Retina 13 | MacBook Retina 15" | MacBook Air 13 Late 2010+| MacBook Pro 13/15/17 2009+ Fits: MacBook Pro 13 Mid 2009+ | MacBook Pro 15 Mid 2009+ | MacBook Pro 17 Mid 2012+ The Nifty MiniDrive Alternative.