Crucial m4 128GB mSATA 6Gb/s. Solid-state drive capacity: 128 GB, Solid-state drive interfaces: Micro Serial ATA III, Memory type: MLC. Read speed: 500 MB/s, Write speed: 175 MB/s, Random write (4KB): 45000 IOPS. Mean time between failures (MTBF): 1200000 h. Operating temperature range (T-T): 0 - 70 °C, Storage temperature range (T-T): -20 - 85 °C, Operating relative humidity range: 0 - 95 %. Height: 4 mm