NVMe (PCIe Gen4 x4) technology with random read/write 650K/800K IOPS and sequential read/write speeds of up to 5000MB/s Large storage capacity of up to 4TB outperforms the fastest Gen3 NVMe SSDs by up to 43%. Rated for increased longevity and dependability at MTTF of more than 1.5 million hours Gen3 backward compatibility