This Seagate 4TB SATA III Hard Drive will make a great storage drive to use alongside your boot drive. With 4 Terabytes of storage capacity, you'll have a fun time filling up this internal hard disk drive. 4TB 5900 RPM SATA 3.5" HD. 4TB Desktop HDD SATA 6Gb/s 3.5" Internal Hard Drive. 5900RPM, 64MB Cache. With over 30 years of trusted performance and reliability, Seagate gives you the Power of One. One-terabyte-per-disk technology. One drive platform for every capacity need and every desktop storage application. One hard drive qualification effort. One Seagate Desktop HDD with the capability and simplicity to deliver the lowest total cost of ownership. SINGLE PACK Seagate 4TB Internal Desktop HDD. Seagate Desktop HDD 4 TB SATA 6Gb/s NCQ 64MB Cache 3.5-Inch Internal Bare Drive ST4000DM000. Seagate Desktop ST4000DM000 HDD 4 TB SATA 6Gb/s NCQ 64MB Cache 3.5-Inch Internal Bare Drive 5900rpm Seagate Desktop HDD.15 3.5in 4TB SATA 6.0Gb/s Internal Hard Drive ST4000DM000, 5900RPM, 64MB Cache, Drive Only.