>>106303031
>Doesn't answer my question
I already did, because it's not a requirement of AMD's B850 reference board.

>On every other board you only get a 16x slot if it's atleast 4x electrical.
Wrong.
https://www.msi.com/Motherboard/B850-GAMING-PLUS-WIFI/Specification
https://www.asus.com/motherboards-components/motherboards/others/b850-max-gaming-wifi-w/techspec/