Compatibility:
-Compatible for MacBook Air 11" A1370
EMC Number :2393 , 2471
MacBookAir3,1 Late 2010: MC505LL/A or MC506LL/A
MacBookAir4,1 Mid 2011: MC968LL/A or MC969LL/A

-Compatible for MacBook Air 11" A1465
EMC Number: 2558 ,2631 or 2924
MacBookAir5,1 Mid 2012: MD223LL/A or MD224LL/A
MacBookAir6,1 Mid 2013: MD711LL/A or MD712LL/A
MacBookAir6,1 Early 2014: MD711LL/B or MD712LL/B
MacBookAir6,2 Mid 2013: MD761LL/A
MacBookAir6,2 Early 2014: MD761LL/B
MacBookAir7,1 Early 2015: MJVM2LL/A or MJVP2LL/A

-Compatible for MacBook Air 13" A1369
EMC Number : 2392 , 2469
MacBookAir3,2 Late 2010: MC503LL/A , MC504LL/A or MC905LL/A
MacBookAir4,2 Mid 2011: MC965LL/A , MC966LL/A or MD226LL/A

-Compatible for MacBook Air 13" A1466
EMC Number: 2559 , 2632 or 2925
MacBookAir5,2 Mid 2012: MD231LL/A , MD232LL/A , MD232LL/A or MD846LL/A
MacBookAir6,2 Mid 2013: MD760LL/A or MD761LL/A
MacBookAir6,2 Early 2014: MD760LL/B
MacBookAir7,2 Early 2015: MJVE2LL/A ,MJVG2LL/A , MMGF2LL/A or MMGG2LL/A
MacBookAir7,2 Early 2016: MMGF2LL/A or MMGG2LL/A
MacBookAir7,2 Mid 2017: MQD42LL/A or MQD32LL/A

Notice:
Please double check your For MacBook's model number "A1xxx" on the bottom of the laptop to determine the compatibility.