Amazon.com: Seagate BarraCuda 4TB Internal Hard Drive HDD – 3.5 Inch Sata 6 Gb/s 5400 RPM 256MB Cache For Computer Desktop PC – Frustration Free Packaging ST4000DMZ04/DM004 : Electronics
ST4000DM006 Seagate Barracuda Pro 4TB 7200RPM SATA 6Gbps 128MB Cache (512e) 3.5-inch Internal Hard Drive
Amazon.com: Seagate BarraCuda Pro 4TB Internal Hard Drive Performance HDD – 3.5 Inch SATA 6 Gb/s 7200 RPM 128MB Cache for Computer Desktop PC, Data Recovery (ST4000DM006) : Electronics
Dell Seagate Barracuda ST4000DM005 4TB 5.9K SATA 6Gb/s 3.5" Hard Drive | eBay
Seagate BarraCuda 4TB 5400 RPM SATA III 6Gb/s 3.5" Internal SMR Hard Drive - Micro Center