ASUS 300 & 400 Motherboards Full AMD Ryzen 3000 Support, BIOS READY
Biostar publishes list of 3rd Gen Ryzen-compatible motherboards and reveals "AMD Ryzen 3000 Desktop Ready" logo in the process - NotebookCheck.net News
MSI AM4 300 And 400 Series MAX Motherboards For Ryzen 3000 - PC Perspective