AMD's Ryzen 4000 and Q3 2020-bound desktop processors confirmed to support the AM4 socket and B450 chipset - NotebookCheck.net News
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
MSI Confirms AMD Ryzen 4000 'Zen 3' Support On 400-Series Boards
Amazon.com: ASUS ROG Strix B450-F Gaming II AMD AM4 (Ryzen 5000, 3rd Gen Ryzen ATX Gaming Motherboard (8+4 Power Stages, HDMI 2.0b/DP,2 x PCIe 3.0 x16, USB 3.2 Gen 2 Type-C, BIOS