This NVME SSD Adapter Card is a upgraded SSD replacement for MacBook Air/Pro. Upgrade the Mac OS to the new version of high sierra 10.13 or later. The upgrade will automatically update the smc and boot rom versions of the Mac to support the SSD of NVME. Allow M.2 PCI-E NVME SSD to Upgrade MacBook Air(2013-2017 Year) A1465 A1466 and Mac Pro(Late 2013-2016 Year) A1398 A1502. Support M.2 NVME/AHCI SSD such as Samsung 960/970 EVO, Intel 600p, WD Black, Crucial P1, HP EX920, ADATA SX8200 ,etc. Insert the adapter card fully into SSD slot and you must not use the Mac's own network recovery software to install a new hard disk Mac OS, but to install through the U disk(you need to upgrade your computer to version 10.13.6 after finishing the installation disk with your original Apple system), in order to identify the new hard disk.