The Western Digital VelociRaptor WD3000HLFS-01G6U0 300GB SATA 2.5" Hard Drive is a high-performance internal laptop drive with a storage capacity of 300GB. It features a 2.5-inch form factor, SATA II interface, and a rotation speed of 10000 RPM, making it ideal for demanding storage needs. With a cache size of 32MB, this Western Digital VelociRaptor model offers fast data access and transfer speeds, making it a reliable option for computers and laptops requiring ample storage space.