HGST Travelstar 0S03563 9.5mm 1TB SATA Hard Drive Kit 1TB, 7200 RPM, 32MB Cache 2.5-Inch Portable Laptop SATA 6GB/s Hard Drive HGST Travelstar internal drives provide best-of-class operating shock and outstanding power management for sturdy unplugged notebook performance Designed to support the high-performance needs of multi-tasking, mobile users with a life on the go, the Travelstar hard drive offers speed without sacrificing battery life, capacity or audio quality Industry Leading Green,Power Consumption