Sintech M.2 NGFF SSD to 26Pin Adapter As SSD of 2012 MACBOOK Air MD224 MD223 MD231 MD232 Allows user to read or write M.2 NGFF SSD as SSD in 2012 MACBOOK Air Fit the following models the Apple 2012 MACBOOK AIR: MD224 MD223 MD231 MD232 support 4 sizes NGFFF M.2 dual notch SSD: type 2230,2242,2260,2280 Can replace following SSD:toshiba THNSNS064GMFP, toshiba THNSNS128GMFP, Samsung MZ-EPC5120/0A2 (512GB) size is same as 2012 Air SSD: 109x24mms.