Does anyone know what they are for?
Com base nas especificações da placa-mãe:
This motherboard features X-mounting 3D printing screws which allow you to use your own 3D printed covers, FAN guards or other 3D printed materials to mounted to the board with ease.
Fonte: MSI X399 JOGANDO DE CARBONO AC sTR4 AMD X399 SATA 6Gb / s USB 3.1 ATX AMD Motherboard