Build Your Own AMD Powered Gaming PC with PCIe® 4.0 | AMD
Amazon.com: MSI A520M PRO Gaming Motherboard (AMD AM4, DDR4, PCIe 4.0, SATA 6Gb/s, Dual M.2, USB 3.2 Gen 1, HDMI/DP, Micro-ATX) : Electronics
AMD has decided to block PCIe 4.0 support on all pre-X570 motherboards | PC Gamer
Amazon.com: Inland Performance 1TB NVMe PCIe Gen 4.0 SSD+Micro Center AMD Ryzen 5 5600X Desktop Processor 6-core Unlocked Bundle with MSI B550-A PRO AM4 DDR4 ATX Motherboard : Electronics
AMD Radeon Pro W6600 100-506208 8GB 128-bit GDDR6 PCI Express 4.0 x16 Workstation Video Card - Newegg.com
Dual M.2 PCIe NVMe Adapter Without PCIe Splitter Function (PCIe Bifurcation Motherboard is Required), Support M.2 PCIe 4.0/3.0 SSD Soft RAID Setup in Windows/Linux
No, AMD Still Isn't Enabling PCIe 4 On 300/400 Series Boards