M.2 NVMe SSD 500GB Samsung SSD 980 PRO, PCIe4.0 x4 / NVMe1.3c, M2 Type 2280 form factor, Seq. Read: 6900 MB/s, Seq. Write: 5000 MB/s, Max Random 4k: Read /Write: 800,000/1000,000 IOPS, Samsung Elpis Controller, 512MB LPDDR4, V-NAND 3-bit MLC