AMD's latest Ryzen 5000 series processors are now on sale，Originally only supported on 500 series motherboards，But AMD promises to support the 400-series motherboards in the market by January next year。And corresponding，B350 not in this list，Older motherboards such as the X370 and A320 will not support Zen 3 processors，At least no OEM has announced support at this time。
According to overclock forum and Chiphell forum users，AMD's latest 5000 series processors can actually run on old motherboards。
First, let’s take a look at this expert from the Chiphell forum，Although he did not disclose how it was achieved，But it does need to be redrawn at least，There is a certain probability that the BIOS will be modified by an individual。It is worth mentioning that，This netizen uses ASRock motherboard。
ASRock A320M motherboard& AMD Ryzen9 5900X 
ASRock A320M motherboard& AMD Ryzen7 4750G
There is no news on the B350 motherboard of each manufacturer，But another bit giant in the Chiphell forum directly released Zen3 Vermeer on a certain motherboard of ASRock B450 to try out the BIOS。
at last，One bit of netizens from overclock revealed that，AMD does not have a lock processor，It just depends on whether the card provider is suitable，For example, Gigabyte X370 motherboard already has a beta version of BIOS，It contains AGESA code that supports Zen3，Everything works fine except for PCI-E4.0 disabled。Although he promised to provide CPU-Z screenshots yesterday，But the latest evidence has not been released today，There is doubt about reliability。
Current Technique、Yingtai and ASRock have released the corresponding Ryzen 5000 series motherboard BIOS，Is there any update to Asus?，Although MSI announced support, it has not yet launched the corresponding BIOS.。