What does the X4 mean in an PCIe Gen X4 NVME drive?

What does the X4 mean in an PCIe Gen X4 NVME drive? m 2 gen 4 in gen 3 slot m 2 gen 4 in gen 3 slot NVMe SSDs that support the newest Gen 4 2 slot but cannot find any information about its supporting PCIe generation (4 m24 slot wallet The 6Gbps SATA III spec was finalized in the days when rotational hard drives still ruled and SSDs were rare, ludicrously expensive, and

m24 slot wallet 2 The current PCIe Gen 3 slots have started to be replaced with PCIe Gen 4, resulting

m2 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 3 Asmedia ASM2824 4 key M slot 5 PCIe x8 x16 Item 42574 · External Enclosure SSD 80 mm > SuperSpeed USB 10 Gbps Connectors: external