Biostar publishes list of 3rd Gen Ryzen-compatible motherboards and reveals "AMD Ryzen 3000 Desktop Ready" logo in the process - NotebookCheck.net News
MSI A520M-A PRO Motherboard (AMD Ryzen 3000 3rd Gen AM4, DDR4, M.2, USB 3.2 Gen 1, HDMI, Micro ATX)
Unboxing an MSI MAG B550 Tomahawk Motherboard – Glenn's SQL Server Performance
Asrock B450m Steel Legend came with a Ryzen 3000 ready bios out of the box from Amazon. : r/Amd
ASRock X570 Phantom Gaming 4 Motherboard AMD Ryzen 3000 CPU Soket AM4 From Japan 4717677338881 | eBay
Ryzen 3000 Ready Chipsets Overview
MSI B450 TOMAHAWK MAX II Gaming Motherboard (AMD Ryzen 3000 3rd gen ryzen AM4, DDR4, M.2, USB 3.2 Gen 1, HDMI, ATX) - Amazon.com