PCI Express (PCIe) has been around since 2003, and in that time it has managed to become the primary data interconnect for not only expansion cards, but also high-speed external devices.

One of the key selling points of AMD's Ryzen 7000-series and X670E motherboards was support for the PCIe 5.0 specification and SSDs with a PCIe 5.0 x4 interface. But some users with AMD X670E ...