Biostar provides PCIe 4.0 support on four X470 and B450 motherboards
ASUS PRIME X470-PRO (Issues and Successes) | Page 77 | Overclock.net
Tom's Hardware] Gigabyte Pulls PCIe 4.0 Support From Pre-X570 Motherboards : r/Amd
List of PCI EXPRESS 4 Support on ASUS X470 & B450 Boards - YouTube
RTX 3080 PCIe 3.0 X470 & PCIe 4.0 X570 performance differences between with 2700X & 3700X – Is there a bottleneck? Should you upgrade your motherboard and CPU?
AMD clarifies once again that B450 and X470 motherboards will not support PCI-E 4.0
BIOS Update Enables PCIe 4 On AMD X470 Boards With Ryzen 3000
ASUS starts removing PCIe 4.0 support from pre-X570 AM4 motherboards | OC3D News
AMD Confirms PCIe 4.0 Not Coming to Older Motherboards (X470, X370, B350, A320)
These ASUS X470 And B450 Boards Support PCIe 4.0! – Pokde.Net
Ryzen 3000: PCIe 4.0 works on X470 and B450 motherboards | PC Builder's Club
AMD Chipset Comparison: B550 Specs vs. X570, B450, X370, & Zen 3 Support (2020) | GamersNexus - Gaming PC Builds & Hardware Benchmarks
These ASUS X470 And B450 Boards Support PCIe 4.0! – Pokde.Net
PRIME X470-PRO|Motherboards|ASUS USA
Ryzen 3000: Asus opens up PCIe 4.0 support for selected X470 and B450 boards
Ryzen 3000: Asus unlocks PCIe 4.0 on X470 and B450 motherboards | PC Builder's Club
PCIe 4.0 support for selected X470 and B450 Asus boards? | TechPowerUp Forums
AMD To Disable PCIe 4.0 Support In Final X470/B450 BIOSes After X570's Launch
Specifications, Features, CPU Support, and PCIe 4.0 on the B550 and X570, Know What Is The Best Features
AMD Confirms Current X470, X370 Motherboards Won't Support PCIe 4.0 For Zen 2 | HotHardware
Gigabyte removes PCIe 4.0 support on all AMD motherboards that are not X570