https://wccftech.com/asrock-supports-amd-ryzen-5000-vermeer-desktop-cpus-on-its-b450-lineup/

ASRock has released its latest BIOS Firmware which enables support for AMD Ryzen 5000 Desktop CPUs on its B450 line of motherboards. In addition to ASRock, ASUS has also announced that it will be launching its BETA BIOS Firmware to enable support for Vermeer family on its X470 & B450 line.

A total of 15 ASRock B450 series motherboards have received the BIOS Firmware which enables support for AMD's Ryzen 5000 Desktop CPUs.