Will my PSU supply my MB with enough??

Hello! I moved to mexico and had to buy a new power supply. I settled down for a Gigabyte UD850GM 850W 80+ Gold certified fully modular ATX Power supply. My MB that i arrived with is a X570 Aorus Master ATX AM4. Now i dont have much knowledge of PCs my last one was recommended by a friend. So after i went to pcpartpicker.com to check for a new case (which i also needed) i saw that it gave me a warning stating that there could be a problem with that. The PSU doesn't seem to provide a - 12 V supply voltage. But it also can't verify if the MB actually needs it. Could someone enlighten me and maybe tell me if i bought the a wrong PSU ?? I would really appreciate that! TIA!