What are the Differences between Gen4 and Gen3 PCIe SSDs?

NVME PCIE SSDs Solid State Drives pcie m2 slot The PCIe NGFF adapter supports PCIe NVMe and PCIe AHCI SSDs including 2242, 2260, 2280 and 22110mm drives The PCIe Adapter Card pcie 30 in 40 slot AS2280Q4U's blazing-fast PCIe Gen4 x4 interface is fully compliant with the NVMe standard With sequential readwrite performance of up to 7,4007,000 MBs,

pcie m2 slot 2 B+M key SSD may support SATA bus or PCIe x2 bus If the SSD only supports SATA bus , its speed will not exceed 600 MB