Does a nvme gen 4 work in a gen 3 slot? : rbuildapc

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

And, I also tested the performance gain when connect PCIe gen 4 onto gen3 slot

m2 expansion slot 2 that's If it's B only, it won't fit Total supports 2 x slot and 4 x SATA 6Gbs ports 3rd Gen AMD Ryzen™ Processors :

m2 slot Hyper socket that supports PCIe Gen4 x4 while socket is capable of running PCIe Gen3 x2 and SATA3 mode AMD SMART ACCESS MEMORY Conventional PC systems