MAXSUN A520 M-ATX Motherboard AMD AM4 Zen 3, DDR4, PCIe3.0 x16, SATA 6Gb/s, M.2, USB 3.1, HDMI/VGA for All Ryzen 1000-4000 Series CPU and Ryzen 5000 Series Without Internal GPU
AMD Confirms Zen 3 Ryzen 4000 CPUs Will Work In These Socket AM4 Motherboards | HotHardware
TechPowerUp] - AMD Ryzen 4000 Series "Vermeer" CPUs to be Compatible with B450 Motherboards : r/Amd
AMD Ryzen 5 4500 - Ryzen 5 4000 Series 6-Core Socket AM4 65W Desktop Processor and ASUS TUF GAMING B550M-PLUS WIFI II AM4 AMD B550 SATA 6Gb/s Micro ATX AMD Motherboard - Newegg.com
AMD Ryzen 4000 desktop CPUs will only work on 500-series motherboards | Windows Central
AMD Ryzen 4000 Zen 3 will be compatible with Socket AM4, but it is end of the road for X470, B450, and below motherboard owners - NotebookCheck.net News
AMD Ryzen 4000 desktop APUs will be here in Q3 2020 | Ars Technica
AMD Ryzen 4000 desktop CPUs rumored to support existing AM4 motherboards | TechRadar