How to determine from command line if NVMe slot is gen 3 or gen 4?

m 2 gen 4 in gen 3 slot   Dan m2 pcie slot

With PCIe Gen 5 SSDs becoming more available, we're going to look at the differences of Gen 4 vs Gen 5

Below are the speeds of potential SSDs depending on generation PCIe Gen 3 SSDs deliver read speeds of about 3500 MBs PCIe Gen 4 M 2 NVMe SSDs are backward-compatible, so even with a Gen3 platform, you usually get better value from a Gen4 SSD even if it can't run at its rated speed

biergarten unlimited slot socket 3, Key M, Processor is AMD Ryzen Is a half-length PCI Express x8 Gen 3 card compatible with a PCIe x4 Gen3 slot? Hi, I currently am using a Pi 5 and I have connected via a Blue USB slot an External SSD enclosure, with an PCIe Gen 4 NVMe SSD in it