It would help if mobo manufacturer put a born on date on there labels other then Ryzen Compliant???? Rating.
When I upgraded my 2600x to a 3600x I had been researching what mobo to put the 2600x on for my son's upgrade from a Fx sytem.
( I was looking for a particular bios version and no higher, because that mobo can't flasback.)
From talking with Amazon on the phone and giving them the numbers listed in the ad there is No Way to tell what bios it has
Other then the Ryzen???? Compliant rating.
Per a call to Asus tech support Amazon at the time (ryzen 3000 series had been out 4-6 months) had more of the older bios mobos but even they could not tell me what bios was on any of those mobo's with the ad #'s.
From those calls I decided to go with a
Msi b450 Pro Carbon with Bios flashback.
Yes it's 2021 and the probability of getting a mobo NOT Ryzen 3000 Compliant is low with paying attention to the ad listing if buying from a online retailer but without there is a chance of getting old stock which there is recourse with a return policy guidelines if it is not.
If and when buying from a local Retailer is the best.
Good building !! And Have A Great Week!!!!!!