The Western Digital 320GB 5400RPM 2.5" SATA Laptop Hard Drive WD3200LPVX is a reliable internal hard disk drive designed for laptops. With a storage capacity of 320GB, this HDD features a rotation speed of 5400 RPM and a cache size of 8MB. The drive is in a 2.5-inch form factor and uses SATA interface for efficient data transfer. The WD Blue product line ensures high performance and durability, making it a great choice for laptop storage needs.