The Hitachi Travelstar 4K40 series continues to redefine state-of-the-art storage for mobile computing. With industry-leading shock characteristics, efficient power consumption, outstanding acoustics, and a range of capacities, the Hitachi Travelstar 4K40 raises the standard for ruggedness. Designed to address the most demanding applications this drive offers customers a stable design platform for even the most advanced portable devices. The Travelstar 4K40 is based on an industry leading design that has been made even better.