To install NVME M.2 SSD, you need to pay attention to the following: First, you must upgrade the os to the new version of high 10.13. The upgrade will automatically update the and boot rom versions of the to support the ssd of nvme. Secondly, you must not use the 's own network recovery software to install a new hard disk os, but to install through the u disk, (to make a 10.13.6 U disk tool in advance), in order to identify the new hard disk. In addition to installation Be sure to format the disk to APFS format. If it is formatted as , it will restart in the installation system interface, and then prompt the disk space is insufficient. This riser card is suitable for converting 2280 (22 mm wide and 80 mm wide) PCIe x4 M.2 NVME hard drive to 2013 edition 2014 edition 2015 2016 2017 edition for A1465 A1466 and 2013 edition 2014 edition 2015 edition 2016 Vintage for Pro A1398 A1502 and other notebook SSD solid state drives. The working principle of the adapter card is extremely simple. Just connect a few wires from your old hard disk and reconnect to the hard disk interface of the for notebook. There is no need for chip conversion in the middle, so there is no need to drive and it will not change any performance of your hard disk. This riser card + hard drive can replace the for original-hard drive of the following models: 2013 version Pro retina A1398 A1502 (ME864 ME865 ME866 ME293 ME294) 2014 version Pro retina A1502 A1398 (MGX72 MGX82 MGX92 MGXA2 MGXC2) 2015 version Pro retina A1502 A1398 (MF839 MF840 MF841 MJLQ2 MJLT2) 2013-2014 version A1465 A1466 (MD711 MD712 MD760 MD761) 2015 version A1465 A1466 (MJVM2 MJVP2 MJVE2 MJVG2) and Pro ME253 MD878, A1419 (Late 2013 and newer). RecommendedSSD(not included): for 970evo/pro,for extreme Pro,for NM600,NM610,NM700,NM710,SN550,SN720,SN750,RD500 760P,for /for /for /for ,etc.(M.2 NVME channel hard drive). These hard drives are currently used by many customers (for WD SN550/SN750,for 970evo) Note:Not for -P1/for /for /for /for NV1/for 981,981A.(These SSD are completely unusable!) Note:for 's 10.13 and later systems already support the M.2 NGFF SSD for the NVMe protocol. Weight:2g Colour:Black Material:plastic Size:23x14mm Package Contents: 5 x adapter card Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.