Thank you for your good product and fast delivery
Working in 2017 airbook. Instructions had a few things missing but a bit of web searching helped. Upgrade from 128GB to 512GB means long overdue O.S. upgrading possible. Can't comment on reliability but hopefully there'll be no problems and a 3yr warranty helps with peace of mind too. Disk benchmark: 322MB/s write, 1161MB/s read Overall, no problems so far.