Seagate SkyHawk 4TB SATA III 7200RPM 3.5 Inch Internal Hard Drive - Laptops Direct
Seagate BarraCuda 4 TB Internal Hard Drive HDD – 3.5 Inch SATA 6 Gb/s 5400 RPM 256 MB Cache for Computer Desktop PC Laptop (ST4000DM004) : Amazon.co.uk: Computers & Accessories
Seagate Skyhawk ST4000VXZ16 4TB Internal Hard Drive HDD Video Recording up to 64 Cameras 3.5" 64MB Cache SATA 6Gb/s Silver FFP Includes 3 Year Rescue Service : Amazon.co.uk: Computers & Accessories
Seagate 4TB Internal hard disk drive for security camera|Diiiz