A13692010 Year821-1143-B :For MacBookAir3,2 Late 2010: MC503LL/A(1.86 GHz Core 2 Duo)For MacBookAir3,2 Late 2010: MC504LL/A(1.86 GHz Core 2 Duo)For MacBookAir3,2 Late 2010: MC905LL/A(2.13 GHz Core 2 Duo)A13692011 Year 821-1339-A: For MacBookAir4,2 Mid 2011: MC965LL/A(1.7 GHz Core i5)For MacBookAir4,2 Mid 2011: MC966LL/A(1.7 GHz Core i5)For MacBookAir4,2 Mid 2011: MD226LL/A(1.8 GHz Core i7)A14662012 Year 821-1477-A: For MacBook Air5,2 "Core i5" 1.8 13" Mid 2012(MD231LL/A)For MacBook Air5,2 "Core i5" 1.8 13" Mid 2012(MD232LL/A)For MacBook Air5,2 "Core i7" 2.0 13" Mid 2012(MD232LL/A)For MacBook Air5,2 "Core i7" 2.0 13" Mid 2012(MD846LL/A)A14662013-2017 Year 821-1722-A: Mid 2013 For Macbook Air 6,2 13" A1466 EMC 2632 MD760LL/A 1.3GHz "Core i5" (I5-4250U) Mid 2013 For Macbook Air 6,2 13" A1466 EMC 2632 MD761LL/A 1.7GHz "Core i7" (I7-4650U) Early 2014 For Macbook Air 6,2 13" A1466 EMC 2632 MD760LL/B 1.4GHz "Core i5" (I5-4260U)Early 2014 For Macbook Air 6,2 13" A1466 EMC 2632 MD761LL/B 1.7GHz "Core i7" (I7-4650U)Early 2015 For Macbook Air 7,2 13" A1466 EMC 2925 MJVE2LL/A 1.6GHz "Core i5" (I5-5250U)Early 2015 For Macbook Air 7,2 13" A1466 EMC 2925 MJVG2LL/A 2.2GHz "Core i7" (I7-5650U)Mid 2017 For MacBook Air 7,2 13" A1466 EMC 3178 MQD32LL/A 1.8GHz "Core i5" (I5-5350U) Mid 2017 For MacBook Air 7,2 13" A1466 EMC 3178 MQD42LL/A 2.2GHz "Core i7" (I7-5650U)