WD Scorpio Blue 7 mm slim 2.5-inch SATA hard drives deliver solid performance and ultra-quiet operation hand-in-hand with low power consumption. In addition, they are designed with ruggedness, reliability, and data-protection features that actively watch over valuable data. These drives feature a 3 Gb/s SATA interface and 8 MB cache. WD Scorpio Blue slim 7 mm hard drives are designed for thin notebook computers and are compatible with mainstream systems. 2-year limited warranty.