SATA 6Gb/s interface optimizes burst performance Seagate AcuTrac servo technology delivers dependable performance, even with hard drive track widths of only 75 nanometers. Seagate OptiCache technology boosts overall performance by as much as 45%. Free Seagate DiskWizard software allows you to install 3TB and 4TB hard drives in Windows, including XP, without UEFI BIOS. The item "Seagate ST4000DM000 4TB 5900rpm 64MB Cache SATA lll Hard Disk Drive" is in sale since Monday, April 4, 2016. This item is in the category "Computers/Tablets & Networking\Drives, Storage & Blank Media\Hard Drives (HDD, SSD & NAS)\Internal Hard Disk Drives".The seller is "hasslefreelimited" and is located in GB. This item can be shipped worldwide.