Hello Pablo,

Martin is absolutely right. Screws for M.2 should have been included with the board.
If not, this is a case for the warranty, which you have to claim from the dealer. So have the screws sent back or return the board completely and order another one (or the same one).
By the way, I have the MSI MEG 570 Unify motherboard to go with this SSD and I am very satisfied.

Many greetings
Uwe

Hello Pablo,
This screw should be in a very small bag in the accessories section of the motherboard box. If you really can't find it, Digitec offers the following set of screws: https://www.digitec.ch/de/s1/product/delock-18288-festplatte-zubehoer-10324186.
M.2 screws are included. I know it has a price, but if you lose a screw, you're on the safe side.
Best regards
Martin