The MK2555GSX 2.5-inch hard disk drive series offers up to one half-terabyte in capacity with quiet acoustics & enhanced durability, providing a solid storage solution for high-capacity mobile PCs, game consoles, printers & external storage. Advanced servo techniques combined with mechanical design changes minimize noise emanating from the MKxx 55GSX drives, making them nearly inaudible during operation. Further design optimizations have boosted the durability of the MK2555GSX series to provide industry-leading robustness against operating shock. An optional free-fall sensor (FFS) feature further protects user data against potentially hazardous external shock & vibration events.