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 ST4000VX007 4 TB Hard Drive - Internal - SATA (SATA/600) | eBay
Seagate Enterprise ST4000NM0035 4000GB Serial ATA III internal hard drive - internal hard drives (4000 GB, Serial ATA III, 7200 RPM, 3.5", HDD, 128 MB) : Amazon.co.uk: Computers & Accessories
Seagate - ST4000VX002 - Surveillance 4TB 5900RPM SATA 6Gb/s 64MB Cache 3.5-inch Hard Drive
Seagate ships 4TB Desktop HDD - CNET
ST4000DM004 | Seagate BARRACUDA 3.5" Internal Installation 4 TB Internal Hard Disk Drive | RS