AMD 300-series and 400-series Motherboards to Lack PCIe Gen 4 with Ryzen 3000 | TechPowerUp
AMD Ryzen 5000 Processors Working on 300 Series Motherboards? - The FPS Review
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
AMD Ryzen 3000 Announced: Five CPUs, 12 Cores for $499, Up to 4.6 GHz, PCIe 4.0, Coming 7/7
AMD Brings Official Ryzen 5000 Support to 300-series Chipset Motherboards Circa 2016 | TechPowerUp
MSI Rolls Out AMD Ryzen 7 5800X3D, Ryzen 5000 & Ryzen 4000 CPU Support BIOS on 500, 400 & 300 Series Motherboards