MSI B550-a Pro Socket AM4 AMD B550 PCIe 4.0 SATAIII USB3.2 Gen2 ATX Motherboard for sale online | eBay
PCIe 4.0: What's New and Why It Matters
ASUS ROG Strix B550-F Gaming (WiFi 6) AMD AM4 Zen 3 Ryzen 5000 & 3rd Gen Ryzen ATX Gaming Motherboard (PCIe 4.0, 2.5Gb LAN, BIOS Flashback, HDMI 2.1, Addressable Gen 2 RGB
Amazon.com: MSI X570-A PRO Motherboard (AMD AM4, DDR4, PCIe 4.0, SATA 6Gb/s, M.2, USB 3.2 Gen 2, HDMI, ATX) : Electronics
Some ASUS X470 and B450 Motherboards Support PCIe 4.0 | eTeknix
PCIe 4.0 Means Motherboard x16 Slots Will Have 16GT/s and 300 Watts At The Slot - Legit Reviews
ASUS PRIME B660M-A D4 LGA 1700 (Intel 12th & 13th Gen) mATX Motherboard (PCIe 4.0, DDR4, 2xM.2 slots, 1Gb LAN, DP, 2 x HDMI, rear USB 3.2 Gen 2, front USB 3.2
ASUS Prime H610M-E D4 LGA 1700(Intel 12th Gen) mATX Motherboard (PCIe 4.0, DDR4,2xM.2 Slots,1Gb LAN,DisplayPort/HDMI/D-Sub, USB 3.2 Gen 1 Ports, SATA 6 Gbps, COM Header, RGB Header) - PC Maestro
AMD has decided to block PCIe 4.0 support on all pre-X570 motherboards | PC Gamer
Z490 Motherboards PCIe Gen 4 Support Detailed: MSI, Gigabyte & ASRock Lead While ASUS Falls Behind
BIOSTAR Formally Enables PCIe Gen 4 on its AMD 400-series Motherboards | TechPowerUp
What Motherboards Has Gen 4 PCIe? | Motherboards Expert