1、Requires for OS X 10.13 High Sierra or later, not compatible with versions prior to for OS X 10.13. Before installation, you need to use the original SSD to upgrade for OS X 2、Compatible with for OS X Air 11‑inch A1465 and for OS X Air 13‑inch A1466 (2013‑2017 Mid), for OS X Pro 13‑inch A1502 and 15‑inch A1398 (late 2013‑mid 2015), for OS X ME253 MD878 3、This NVME SSD conversion adapter uses a DIY kit for assembling an upgraded version of the SSD replacement, equipped with a large-capacity NVME SSD 4、Adopts M-Key M.2 NVME input interface, does not support SATA M.2 protocol 5、SSD adapter card have stable transmission, excellent performance and long service life Item Type: SSD Adapter Card Input Interface: M-Key M.2 NVME (does not support SATA M.2 protocol) The Following Machine Models Can Be Installed: 2013 For OS X Pro A1398 A1502 (ME864 ME865 ME866 ME293 ME294), 2014 for OS X Pro A1502 A1398 (MGX72 MGX82 MGX92 MGXA2 MGXC2), 2015 for OS X Pro A1502 A1398 (MF839 MF840 MF841 MJLQ2 MJLT2 MJLU2), 2013-2014 for OS X Air A1465 A1466 (MD711 MD712 MD760 MD761), 2015 for OS X Air A1465 A1466(MJVM2 MJVP2 MJVE2 MJVG2 MMGF2 MMGG2), 2017 for OS X Air A1466(MQD32 MQD42 MQD52, Model A1466 EMC3178), 2017 for OS X Pro ME253 MD878, for OS X A1419 (late 2013 and later machines). 1 x SSD Adapter Card