Designed for optimal performance and high durability, the Toshiba MKxx61GSYN series of 7,200 RPM hard disk drives deliver 160 to 640GB of storage capacity in the 2.5-inch form factor. The MKxx61GSYN family of Serial ATA drives offers extreme power efficiency and superior operating acoustics over 3.5-inch drives for today's high-end notebook PCs gaming laptops, and mobile workstations as well as Energy Star all-in-one and slimline desktop PCs.