Gigabyte X570S GAMING X (rev. 1.0) AMD X570S GAMING Motherboard with Twin 12+2 Phases Digital VRM Solution with 50A DrMOS, Fully Covered Thermal Design, Triple Ultra-Fast NVMe PCIe 4.0/3.0 x4 M.2 - Newegg.com
PCIe Gen 4 vs. Gen 3 Slots, Speeds
Amazon.com: ASUS AM4 TUF Gaming X570-Plus (Wi-Fi) AM4 Zen 3 Ryzen 5000 & 3rd Gen Ryzen ATX Motherboard with PCIe 4.0, Dual M.2, 12+2 with Dr. MOS Power Stage : Everything Else
Enabling PCIe 4.0 on a B450 Motherboard? - YouTube
ASUS Prime H570-PLUS LGA1200 (Intel® 11th/10th Gen) ATX Motherboard (PCIe 4.0, 8 Power Stages, HDMI, DVI, DisplayPort, Dual M.2, Intel 1Gb LAN, USB 3.2 Gen 2 Type-C®, Thunderbolt™ 4) | Computer component, Intel motherboard
ASUS Prime B660M-A D4 LGA 1700(Intel 12th 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 Gen 1 Type-C, Aura Sync)
PCIe 4.0: Everything you need to know, from specs to compatibility to caveats | PCWorld
ASUS PRIME H670-PLUS D4 LGA 1700 (Intel 12th Gen) ATX Motherboard (PCIe 4.0, DDR 195553511728 | eBay
Asus publishes X470 and B450 PCIe Gen 4 compatibility chart - Mainboard - News - HEXUS.net
AMD confirms lack of PCIe 4.0 support on older motherboards
ASUS PRIME B660 PLUS D4 LGA 1700 Intel 12th Gen ATX Motherboard PCIe 4.0, DDR4 195553523011 | eBay