Hello,
I have a Gigabyte B450M DS3H (rev. 1.x) motherboard.
Connected to the motherboard's M.2 slot is a Samsung 970 Pro SSD.
I bought this M.2-to-PCIe adapter:
https://www.amazon.com/Adapter-advanced-solution-Controller-Expansion/dp/B07JKH5VTL
The seller told me that I can connect an M.2 SATA...