Plus it's cheaper buying a 2.5" drive compared to an M.2 SSD and a SATA adapter. I don't understand why you'd want to use an M.2 drive unless you had one laying around.Since your Mini only support Sata Connector why don't you use 2.5" SSD instead?
I need it as fast as possible because of CAD/CAM and and FINAL CUT Video editing both needing a bit of power but what I read here makes that I will put in the max RAM (now 12GB will upgrade to 16GB) and get perhaps an extra SSD.
Because I am new to both Mac and this forum I want to thank people who advised me and helped.
Thank you to all
Meindert