SEAGATE ST4000DX000 Barracuda 4TB 7200 RPM 128MB cache SATA 6.0Gb/s 3.5 internal hard drive (Bare Drive) New - Bare Drive 1-Year Warranty Seagate ST4000DX000 SEAGATE ST4000DX000 Barracuda 4TB 7200 RPM 128MB cache SATA 6.0Gb/s 3.5 internal hard drive (Bare Drive)