NVMe (PCIe Gen4 x4) technology with up to 5000MB/s sequential reads, random read/write 680K/850K IOPS.date transfer rate:5000.0 megabytes_per_second.Specific uses: Personal,Gaming,Business Spacious storage up to 4TB Performs up to 43% faster than the fastest Gen3 NVMe SSDs Rated at MTTF greater than 1.5 million hours for extended longevity and reliability Backward compatibility with Gen3 no damage no retail box functional