For sale, internal hard drive (HDD) from Western Digital (famous Blue series) with a capacity of 500 GB. Suitable for laptops or external use by adding a storage enclosure. Technical Specifications: Brand: Western Digital (WD Blue) Storage Capacity: 500 GB (500GB) Size: 2.5 inches (suitable for laptops and desktops alike) Rotation Speed: 5400 RPM Interface: SATA III