128GB Solid State Drive Pre-Loaded with Apple macOS High Sierra 10.13.6 operating system.  SSD will come already set up with all necessary drivers and applications, just plug n play. Make your old MacBook fast again with this SSD! Item Dimensions 3.94 x 2.75 x 0.27 inches Item Weight 1.3 ounces Ships same or next day with tracking!  *This drive is only compatible with MacBook Pros released 2010, 2011, 2012.* Thank you. 🍁🍁Ships to Canada for only $13🍁🍁 🌮🌮Ships to Mexico for only $13🌮🌮