![Amazon.com: Hitachi Ultrastar 7K4000 4 Terabyte 4TB SATA 7200RPM 64MB Hard Drive - 0F14683 (Renewed) : Electronics Amazon.com: Hitachi Ultrastar 7K4000 4 Terabyte 4TB SATA 7200RPM 64MB Hard Drive - 0F14683 (Renewed) : Electronics](https://m.media-amazon.com/images/I/618upINIArL._AC_UF894,1000_QL80_.jpg)
Amazon.com: Hitachi Ultrastar 7K4000 4 Terabyte 4TB SATA 7200RPM 64MB Hard Drive - 0F14683 (Renewed) : Electronics
![Amazon.com: Western Digital Purple 4TB Surveillance Hard Disk Drive - 5400 RPM Class SATA 6 Gb/s 64MB Cache 3.5 Inch - Western Digital40PURZ [Old Version] : Electronics Amazon.com: Western Digital Purple 4TB Surveillance Hard Disk Drive - 5400 RPM Class SATA 6 Gb/s 64MB Cache 3.5 Inch - Western Digital40PURZ [Old Version] : Electronics](https://m.media-amazon.com/images/I/41azQ9rlX+L._AC_.jpg)
Amazon.com: Western Digital Purple 4TB Surveillance Hard Disk Drive - 5400 RPM Class SATA 6 Gb/s 64MB Cache 3.5 Inch - Western Digital40PURZ [Old Version] : Electronics
![Amazon.com: Seagate Portable 4TB External Hard Drive HDD – USB 3.0 for PC, Mac, Xbox, & PlayStation - 1-Year Rescue Service (STGX4000400) : Electronics Amazon.com: Seagate Portable 4TB External Hard Drive HDD – USB 3.0 for PC, Mac, Xbox, & PlayStation - 1-Year Rescue Service (STGX4000400) : Electronics](https://m.media-amazon.com/images/I/71iIr9koTGL._AC_UF1000,1000_QL80_.jpg)
Amazon.com: Seagate Portable 4TB External Hard Drive HDD – USB 3.0 for PC, Mac, Xbox, & PlayStation - 1-Year Rescue Service (STGX4000400) : Electronics
![Amazon.com: Western Digital Red Pro 4TB 3.5-Inch 7200rpm 64MB Cache NAS Hard Drive (WD4002FFWX) : Electronics Amazon.com: Western Digital Red Pro 4TB 3.5-Inch 7200rpm 64MB Cache NAS Hard Drive (WD4002FFWX) : Electronics](https://m.media-amazon.com/images/I/51z-0u+2dTL._AC_UF894,1000_QL80_.jpg)
Amazon.com: Western Digital Red Pro 4TB 3.5-Inch 7200rpm 64MB Cache NAS Hard Drive (WD4002FFWX) : Electronics
![Amazon.com: Seagate 4TB BarraCuda SATA 6Gb/s 64MB Cache 3.5-Inch Internal Hard Drive (ST4000DM005) (Renewed) : Electronics Amazon.com: Seagate 4TB BarraCuda SATA 6Gb/s 64MB Cache 3.5-Inch Internal Hard Drive (ST4000DM005) (Renewed) : Electronics](https://m.media-amazon.com/images/I/71Ije05ALoL.jpg)
Amazon.com: Seagate 4TB BarraCuda SATA 6Gb/s 64MB Cache 3.5-Inch Internal Hard Drive (ST4000DM005) (Renewed) : Electronics
![Amazon.com: WD Red Pro 4TB NAS Hard Disk Drive - 7200 RPM SATA 6 Gb/s 64MB Cache 3.5 Inch - WD4001FFSX : Electronics Amazon.com: WD Red Pro 4TB NAS Hard Disk Drive - 7200 RPM SATA 6 Gb/s 64MB Cache 3.5 Inch - WD4001FFSX : Electronics](https://m.media-amazon.com/images/I/71n++WwxSnL._AC_UF894,1000_QL80_.jpg)
Amazon.com: WD Red Pro 4TB NAS Hard Disk Drive - 7200 RPM SATA 6 Gb/s 64MB Cache 3.5 Inch - WD4001FFSX : Electronics
![Amazon.com: Seagate 4TB Laptop HDD SATA 6Gb/s 128MB Cache 2.5-Inch Internal Hard Drive (ST4000LM016) : Electronics Amazon.com: Seagate 4TB Laptop HDD SATA 6Gb/s 128MB Cache 2.5-Inch Internal Hard Drive (ST4000LM016) : Electronics](https://m.media-amazon.com/images/I/51MAYJ7ErOL._AC_UF894,1000_QL80_.jpg)
Amazon.com: Seagate 4TB Laptop HDD SATA 6Gb/s 128MB Cache 2.5-Inch Internal Hard Drive (ST4000LM016) : Electronics
![Amazon.com: WD 4TB 3.5 Inch SATA III, 7200 RPM, 64 MB Cache Enterprise Hard Drive (WD4000FYYZ) (Renewed) : Electronics Amazon.com: WD 4TB 3.5 Inch SATA III, 7200 RPM, 64 MB Cache Enterprise Hard Drive (WD4000FYYZ) (Renewed) : Electronics](https://m.media-amazon.com/images/I/81rjv52AO6L.jpg)
Amazon.com: WD 4TB 3.5 Inch SATA III, 7200 RPM, 64 MB Cache Enterprise Hard Drive (WD4000FYYZ) (Renewed) : Electronics
![Amazon.com: WD40EZRX Western Digital 4TB Internal Hard Drive IntelliPower 64MB Cache SATA 6.0Gb : Electronics Amazon.com: WD40EZRX Western Digital 4TB Internal Hard Drive IntelliPower 64MB Cache SATA 6.0Gb : Electronics](https://m.media-amazon.com/images/I/51BcRHnsL7L.jpg)
Amazon.com: WD40EZRX Western Digital 4TB Internal Hard Drive IntelliPower 64MB Cache SATA 6.0Gb : Electronics
![Amazon.com: WD Black 4TB Performance Desktop Hard Disk Drive - 7200 RPM SATA 6 Gb/s 64MB Cache 3.5 Inch - WD4001FAEX : Electronics Amazon.com: WD Black 4TB Performance Desktop Hard Disk Drive - 7200 RPM SATA 6 Gb/s 64MB Cache 3.5 Inch - WD4001FAEX : Electronics](https://m.media-amazon.com/images/I/61T7DgFuc5L._AC_UF894,1000_QL80_.jpg)
Amazon.com: WD Black 4TB Performance Desktop Hard Disk Drive - 7200 RPM SATA 6 Gb/s 64MB Cache 3.5 Inch - WD4001FAEX : Electronics
![Seagate Expansion 4TB External USB 3.0 Portable Hard Drive with Rescue Data Recovery Services Black STKM4000400 - Best Buy Seagate Expansion 4TB External USB 3.0 Portable Hard Drive with Rescue Data Recovery Services Black STKM4000400 - Best Buy](https://pisces.bbystatic.com/image2/BestBuy_US/images/products/6461/6461973_rd.jpg)