ORIGINAL APPLE 256GB from a Macbook air. Read and write tested.
This is the real Apple drive so you will not have problems upgrading your OS to 10.10
ONLY works in Macbook Air 3,1 untis Late 2010 - Mid 2011 so make sure you are ordering the right part. EMC on the bottom of your computer should be 2471
THIS IS FOR A SSD ONLY NOT A WHOLE COMPUTER.