Can you boot a SATA M.2 drive from old mainboard?

The thing is, that I don't use this SATA M.2 anymore for my drive, and wanted to put it to my NAS box.
But I know for sure, that my NAS box doesn't support NVMe, yet. No NVMe slot whatsoever. I can buy an adapter, but I need to make sure before I proceed that my BIOS will be able to boot from it. 

The M.2 card that I need to move is Samsung 850 Evo M.2 SATA3. As for NAS box, it is a repurposed old AMD AM3 mainboard. Gigabyte 990FXA-UD3 (rev 4.1). UEFI is supported, but no NVMe as of yet. 

Thank you