Amazon.com: ASUS Prime B550-PLUS AMD AM4 Zen 3 Ryzen 5000 & 3rd Gen Ryzen ATX Motherboard (PCIe 4.0, ECC Memory, 1Gb LAN, HDMI 2.1, DisPlayPort 1.2 (4K@60HZ), Addressable Gen 2 RGB Header
Asus publishes X470 and B450 PCIe Gen 4 compatibility chart - Mainboard - News - HEXUS.net
AMD has decided to block PCIe 4.0 support on all pre-X570 motherboards | PC Gamer
AMD confirms lack of PCIe 4.0 support on older motherboards
Motherboard M-ATX B760M DDR4 8GB RAM Core i5 CPU 12 13 Gen Gaming Pcie 4.0 PC | eBay
PCIe Gen 4 vs. Gen 3 Slots, Speeds
NeweggBusiness - ASUS AM4 TUF Gaming X570-Plus Motherboard with PCIe 4.0, Dual M.2, 12+2 Power Stage, HDMI, DP, SATA 6Gb/s, USB 3.2 Gen 2 and Aura Sync RGB Lighting
PCIe 3.0 vs 4.0: What's the Difference and Which Is Better - MiniTool Partition Wizard
ASUS Prime B760-PLUS D4 Intel B760(13th and 12th Gen) LGA 1700 ATX motherboard with PCIe 5.0, three PCIe 4.0 M.2 slots, DDR4, Realtek 2.5Gb Ethernet, DisplayPort, VGA, HDMI, SATA 6 Gbps - Newegg.com
What is the difference between PCIe Gen 3 and PCIe Gen 4? - Kingston Technology
ASUS PRIME B660M-A AC D4 LGA 1700 (Intel 12th & 13th Gen) mATX Motherboard (PCIe 4.0, DDR4, 2x M.2 PCIe 4.0 slots, Wi-Fi 5, front USB 3.2 Gen 1 Type-C, USB 3.2