Apple MacBook Air Pro SSD to 12+16-Pins NGFF M.2 PCI-e Converter Adapter 2013-17
Because adapter card + SSD, size is bigger than standard M.2 NGFF solid-state drives. 2012 version MacBook Air SSD is 7+17 pin, size is 109 mm x 24 mm. 2012 version MacBook Pro SSD is 7+17 pin, size is 89 mm x 33 mm.