ASUS Announces UEFI BIOS Support & AGESA 1.2.0.7 for AMD Ryzen 7 5800X3D & new AMD Ryzen 5000, 4000 Series CPUs for ASUS AM4 X570, B550, X470, B450, X370, B350, A520, and
ASRock > B450 Pro4 R2.0
7 Things To Know - AMD B450 / X470 with 4000 Series Support - YouTube
AMD Listened: Adds Support For Zen 3 Processors To X470 And B450 Motherboards
AMD Zen 3, Ryzen 4000-series CPUs will work on B450, X470 motherboards - ThinkComputers.org