My wife's Macbook Air 2010 died almost exactly 10 years after she bought it. This adapter, after removing the SSD from my old Macbook Air, allowed me to use the old SSD as an external hard drive for my new Macbook Air. The SSD plugs into the board, which in turn plugs into the adapter - there's even a screw and screwdriver to hold the SSD to the board. The new Mac recognized the SSD with no problems. No complaints