MSI MPG Z790I EDGE WIFI Manuel D'utilisation page 34

Installing M.2 module into M2_3 slot
1. Insert your M.2 SSD into the M2_3 slot at a 30-degree angle.
2. Secure the M.2 SSD in place with the supplied M.2 8.5H screw.
8.5H screw
2 2
1 1
30º 30º
32