Question about Adata XPG Spectrix S40G

Link the mainboard right away!
Check the mainboard data to see if it has M.2 specifications, if you don't find any data on Galaxus (which is usually entered) otherwise go to the manufacturer's page and check there if the SSD is M.2 capable.

As I googled it so quickly, a z390 chipset is equipped with 2x M.2, so yes.