So you should understand that the exchange that goes like this might be seen as someone ignoring facts brought to the table by a conversation partner:
Someone: incorrect statement (3000-series only on B550+)
Sometwo: correction, clarification, link to spec
Someone: supposition (I am almost sure)
Sometwo: precise specification to remove the need for supposition, link to spec again
Someone: criticism of sometwo for attitude regarding continued provision of vendor-supplied information in favor of someone's false statements and suppositions
If I'm reading this thread, for any hope of information about Ryzen compatibility, you've lied to me once, and given me a guess. I've provided links to manufacturer guidance and ruffled someone's feathers. But facts are more useful.