MTFDDAT128MAY-1AH12ABYY is a type of solid state drive (SSD), specifically from Micron's M500DC M.2 series of drives. The M500DC M.2 is a SATA-based SSD that is designed for enterprises and offers performance, endurance, and data security for mission-critical applications. The specific part MTFDDAT128MAY-1AH12ABYY is a 128GB, M.2 form-factor drive with a 6Gbps SATA interface. It utilizes Micron's 2x nm 25 nm multi-level cell NAND flash memory to store data. This SSD has performance of up to 550MB/s sequential read, and up to 520MB/s sequential write. It is also backed by a 5-year limited warranty.