S78-440K090-P83 M.2 NVMe SSD 500GB MSI Spatium M450, PCIe4.0 x4 / NVMe1.4, M2 Type 2280 form factor, Seq. Read: 3600 MB/s, Seq. Write: 2300 MB/s, Max Random 4k: Read /Write: 300,000/550,000 IOPS, Controller Phison E19T, LDPC ECC Algorithm, EtE Data Protection, APST, AES256/TCG OPAL2.0/Pyrite, 3D NAND TLC