Compatibility: Model A1370 (11″) – MacBookAir4,1 Mid 2011: MC968LL/A (1.6GHz Core i5). – MacBookAir4,1 Mid 2011: MC969LL/A (1.6GHz Core i5). – MacBookAir4 ,1 Mid 2011: MC969LL/A (1.8 GHz Core i7). Model A1465 (11″): – MacBookAir5,1 Mid 2012: MD223LL/A (1.7 GHz Core i5). – MacBookAir5,1 Mid 2012: MD224LL/A (1.7GHz Core i5). – MacBookAir5,1 Mid 2012: MD224LL/A (2.0GHz Core i7) – MacBookAir6,1 Mid 2013: MD711LL/A (1.3GHz Core i5). – MacBookAir6,1 Mid 2013: MD712LL/A (1.3GHz Core i5). – MacBookAir6,1 Mid 2013: MD712LL/A (1.7GHz Core i7). – MacBookAir6,1 Early 2014: MD711LL/B (1.4GHz Core i5) – MacBookAir6,1 Early 2014: MD712LL/B (1.4GHz Core i5) – MacBookAir6,1 Early 2014: MD712LL/B ( 1.7 GHz Core i7) – MacBookAir7,1 Early 2015: MJVM2LL/A (1.6 GHz Core i5 or 2.2 GHz Core i7) – MacBookAir7,1 Early 2015: MJVP2LL/A (1.6 GHz Core i5 or 2.2 GHz Core i7)