![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
![WD Purple 4TB Surveillance Hard Disk Drive - 5400 RPM Class SATA 6 Gb/s 64MB Cache 3.5 Inch - WD40PURZ - Walmart.com WD Purple 4TB Surveillance Hard Disk Drive - 5400 RPM Class SATA 6 Gb/s 64MB Cache 3.5 Inch - WD40PURZ - Walmart.com](https://i5.walmartimages.com/seo/WD-Purple-4TB-Surveillance-Hard-Disk-Drive-5400-RPM-Class-SATA-6-Gb-s-64MB-Cache-3-5-Inch-WD40PURZ_0da0714f-2164-49d1-89cc-b4d257b23541_1.b83754fd720412e9c90b71864c70c57a.jpeg?odnHeight=2000&odnWidth=2000&odnBg=FFFFFF)
WD Purple 4TB Surveillance Hard Disk Drive - 5400 RPM Class SATA 6 Gb/s 64MB Cache 3.5 Inch - WD40PURZ - Walmart.com
![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: Seagate BarraCuda Internal Hard Drive 4TB SATA 6Gb/s 128MB Cache 2.5-Inch 15mm (ST4000LM024) (Renewed),Mechanical Hard Disk : Electronics Amazon.com: Seagate BarraCuda Internal Hard Drive 4TB SATA 6Gb/s 128MB Cache 2.5-Inch 15mm (ST4000LM024) (Renewed),Mechanical Hard Disk : Electronics](https://m.media-amazon.com/images/I/61vkbyByyEL._AC_UF894,1000_QL80_.jpg)
Amazon.com: Seagate BarraCuda Internal Hard Drive 4TB SATA 6Gb/s 128MB Cache 2.5-Inch 15mm (ST4000LM024) (Renewed),Mechanical Hard Disk : Electronics
![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.jpg)
Amazon.com: Hitachi Ultrastar 7K4000 4 Terabyte 4TB SATA 7200RPM 64MB Hard Drive - 0F14683 (Renewed) : Electronics
![Original Western Digital WD 4TB Red NAS Hard Disk Drive 3.5" 4TB Internal Hard Drive 5400RPM SATA 6Gb/s 64MB Cache For Desktop Original Western Digital WD 4TB Red NAS Hard Disk Drive 3.5" 4TB Internal Hard Drive 5400RPM SATA 6Gb/s 64MB Cache For Desktop](https://ae01.alicdn.com/kf/Se63db31fce9047d39fde7c6360c5e43bU/Original-Western-Digital-WD-4TB-Red-NAS-Hard-Disk-Drive-3-5-4TB-Internal-Hard-Drive.jpg)