Then there's the additions made by the Mainboard manufacturers like Asus. For example, the manual of the Pro WS X570-ACE states that: "USB 3.2 Gen 1/Gen 2 dev

Then there's the additions made by the Mainboard manufacturers like Asus. For example, the manual of the Pro WS X570-ACE states that: "USB 3.2 Gen 1/Gen 2 devices can only be used as data storage only [sic]" In any case, if you connect a keyboard, mouse or USB hub to them, they'll work.