The Western Digital Blue PC Mobile Hard Drive is a 1TB 2.5" SATA III internal laptop drive designed for use with laptops and PCs. With a silver color and a compact 2.5-inch form factor, this Western Digital drive offers reliable storage capacity for a variety of devices. Featuring a 5400 RPM rotation speed and a 128 MB cache size, this HDD drive from the WD Blue product line provides efficient performance for all your storage needs. Made in Thailand, this Western Digital Blue hard drive is a dependable choice for expanding storage capacity in your computer systems.