Alleged MSI tech support email states older 300-series motherboards won't support AMD Ryzen 3000 processors - NotebookCheck.net News
B450M DS3H (rev. 1.x) Key Features | Motherboard - GIGABYTE Global
How to Ensure Your Motherboard Will Support a Ryzen 3000 CPU | Tom's Hardware
GIGABYTE AM4 Motherboards: PCIe 4.0 Ready for Ryzen 3000
Ryzen 3000: B350 and A320 mainboards are compatible too | PC Builder's Club
BIOSTAR Teases X570 Racing Motherboard For AMD Ryzen 3000 CPUs
MSI B550M PRO Motherboard (AMD Ryzen 3000 3rd Gen AM4, DDR4, M.2, USB 3.2 Gen 1, DP, HDMI, Micro ATX)
AMD bids adieu to socket AM4 by extending Ryzen 5000 Zen 3 support to all 300series AM4 motherboards including the A320 chipset - NotebookCheck.net News
Asus reveals full list of AM4 motherboards that will get BIOS updates for AMD's upcoming Ryzen 3000 CPUs - NotebookCheck.net News
Re: AMD Will Support Zen 3, Ryzen 4000 CPUs on X47... - AMD Community