M.2 NVMe SSD 1.0TB Samsung SSD 980, PCIe3.0 x4 / NVMe1.4, M2 Type 2280 form factor, Seq. Read: 3500 MB/s, Seq. Write: 3000 MB/s, Max Random 4k: Read /Write: 500K/480K IOPS, Samsung Pablo Controller, 512MB LPDDR4, V-NAND 3-bit MLC