ASUS Begins Enabling Limited PCIe Gen 4.0 on AMD 400-series Chipset Motherboards | TechPowerUp
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
AMD Promontory B450; 4 x DDR4; 2 PCIe 3.0 x16, 4 PCIe 2.0 x1; 6 SATA3, Ultra M.2, M.2 (PCIe Gen3 x2 & SATA3), 2 USB 3.1, 6 USB 3.1; 4 x SATA3 6.0 Gb/s - Technotronics
RAM Issues on b450f Gaming and pcie 4.0 confusion : r/ASUSROG