Here is a question for you! I used that same Sintech adapter you listed and a WD Black NVME 1tb SSD in a new 27" iMac 2019 and when I'd hold option on the keyboard at startup, the computer would boot up to the boot options page but as soon as I clicked on anything, ie, A USB Mac OSX Mojave install disk, or Internet recovery, the computer would show the Stop symbol and need to be re booted.