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