M.2 NVMe SSD 500GB MSI Spatium M390, PCIe3.0 x4 / NVMe1.4, M2 Type 2280 form factor, Seq. Read: 3000 MB/s, Seq. Write: 2300 MB/s, Max Random 4k: Read /Write: 300,000/550,000 IOPS, Controller Phison E15T, LDPC ECC Algorithm, E-t-E Data Protection, APST, AES256/TCG OPAL2.0/Pyrite, 3D NAND TLC