SOYO CLASSIC AMD Ryzen 2ND and 3rd Gen AM4 M.2 USB 3 DDR4 D-Sub DVI HDMI Micro-ATX Motherboard Support Ryzen 3000-5000 series CPU(SY-CLASSIC B 450 M) | SHEIN USA
Alleged MSI tech support email states older 300-series motherboards won't support AMD Ryzen 3000 processors - NotebookCheck.net News
Amazon.com: MSI ProSeries AMD Ryzen 2ND and 3rd Gen AM4 M.2 USB 3 DDR4 D-Sub DVI HDMI Micro-ATX Motherboard (B450M PRO-VDH Max) : Electronics
Amazon.com: MSI B450 TOMAHAWK MAX II Gaming Motherboard (AMD Ryzen 3000 3rd gen ryzen AM4, DDR4, M.2, USB 3.2 Gen 1, HDMI, ATX)