Seagate 4TB 3.5’ Barracuda, 5400RPM SATA3 6Gb/s 256MB Cache HDDSeagate Secure models provide Self – Encrypting Drive (SED) hardware – based data security and deliver an Instant Secure Erase feature for safe, fast and easy drive retirement. They meet NIST 800 – 88 media sanitization specification and also support the Trusted Computer Group (TCG) Opal standard.Features Cost – effective storage upgrade for laptop or desktop computers Store all your games, music, movies and more with up to 4TB of storage SATA 6Gb/s interface optimizes burst performance Seagate Secure models for hardware – based data security Instant Secure Erase allows safe and easy drive retirement Protect data with Self – Encrypting Drive (SED) models Versatile HDDs for all your PC needs bring you industry – leading excellence in personal computing. Capacities up to 4TB for desktops, BarraCuda leads the market with the widest range of storage options available. Advanced Power modes help save energy without sacrificing performance. SATA 6Gb/s interface optimizes burst performance.Specifications BarraCuda Model ST4000DM004Performance Interface: SATA 6.0Gb/s Capacity: 4TB Cache: 256MBDimensions Form Factor: 3.5’ Height (maximum): 20.17mm Width (maximum): 101.6mm Length (maximum): 146.99mm