M.2 NVMe SSD 1.0TB Samsung SSD 990 EVO, Interface: PCIe4.0 x4 / 5.0 x2, NVMe 2.0, M2 Type 2280 form factor, Seq. Read: 5000 MB/s, Seq. Write: 4200 MB/s, Max Random 4k: Read /Write: 680,000/800,000 IOPS, Samsung in-house Controller, AES 256-bit Encryption TCG/Opal, HMB, V-NAND TLC, Retail