Macbook air 13 inch apple m3 chip 512gb midnight July 8, 2019 16 32 64 128 Apple macbook air 13 inch with m3 chip 512gb 24gb midnight Apple macbook air 13 inch with m2 chip 256gb (mly33) midnight Macbook air 13 inch m1 chip Apple macbook air 2020 13 inch m1 8gb 512gb