G.Skill FM-25S2S-64GB. Solid-state drive capacity: 64 GB, Size: 63.5 mm (2.5 "), Solid-state drive interfaces: Serial ATA II. Read speed: 155 MB/s, Write speed: 90 MB/s. Mean time between failures (MTBF): 1500000 h. Operating temperature range (T-T): 0 - 70 °C, Operating shock: 1500 G. Certification: RoHS FCC CE