will gen 4 m 2 work in gen 3 slot

PCIe Motherboard pcie gen 4 in gen 3 slot Amphenol has an array of Card Edge connectors supporting PCI Express® Gen 3, Gen 4 and Gen 5 standards along with PCIe® M GENERATION SYSTEMS Amphenol PCIe® pcie expansion slot Ultimate Scalibility: 4*PCIe x16 slots for Multi-GPU and 4*PCIe x4 slots; Next-gen Connectivity: Dual USB4® Type-C ports; Blazing Fast Networks

pcie x4 in x16 slot On paper, Generation 4 drives are essentially twice as fast as Gen 3 drives, an absolutely massive improvement It isn't the same kind of jump