Amazon.com: 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
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, USB
Z490 Motherboards PCIe Gen 4 Support Detailed: MSI, Gigabyte & ASRock Lead While ASUS Falls Behind
PCIe 4.0: Everything you need to know, from specs to compatibility to caveats | PCWorld
What Motherboards Has Gen 4 PCIe? | Motherboards Expert
Z490 Motherboards PCIe Gen 4 Support Detailed: MSI, Gigabyte & ASRock Lead While ASUS Falls Behind
Gigabyte's removed PCIe 4.0 support from their 300/400 series AM4 motherboards | OC3D News
PCIe Gen 4 vs. Gen 3 Slots, Speeds
AMD confirms lack of PCIe 4.0 support on older motherboards