Amazon.com: HGST Ultrastar 7K4000 (0F17719) 4TB 64MB Cache 7200RPM SATA III 6.0Gb/s 3.5" Internal Desktop Hard Drive for PC, Mac, NAS, RAID, CCTV DVR (Renewed) w/1 Year Warranty : 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/61UDbxdRV8L._AC_UF894,1000_QL80_.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: 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: WD40EZRX Western Digital 4TB Internal Hard Drive IntelliPower 64MB Cache SATA 6.0Gb : Electronics
Amazon.com: SanDisk Professional 4TB G-DRIVE ArmorATD - Rugged, Durable Portable External Hard Drive HDD, USB-C, USB 3.2 Gen 1 - SDPH81G-004T-GBAND : Electronics
Amazon.com: Western Digital 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD42PURZ : Electronics
Amazon.com: WD 4TB Elements Portable HDD, External Hard Drive, USB 3.0 for PC & Mac, Plug and Play Ready - WDBU6Y0040BBK-WESN : Electronics
Amazon.com: Seagate IronWolf 4TB NAS Internal Hard Drive HDD – CMR 3.5 Inch SATA 6Gb/s 5900 RPM 64MB Cache for RAID Network Attached Storage – Frustration Free Packaging (ST4000VNZ08) : Electronics
Amazon.com: Mb4000gcwdc Hewlett-Packard 4Tb 7200Rpm 6G Lff Sata Qr Hard Drive P/N : Electronics
Amazon.com: Silicon Power 4TB Rugged Portable External Hard Drive Armor A60, Shockproof USB 3.1 Gen 1 for PC, Mac, Xbox and PS4, Black : Electronics
Amazon.com: Western Digital 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 64 MB Cache, 3.5" - WD40PURZ : Electronics
Amazon.com: Seagate FireCuda HDD 4TB Internal Hard Drive HDD - 3.5 Inch CMR SATA 6Gb/s 7200RPM 256MB Cache 300TB/year with Rescue Services (ST4000DX005) : Electronics
Amazon.com: MaxDigital 4TB 7200RPM 64MB Cache SATA 6.0Gb/s (Enterprise Storage) 3.5inch Internal Hard Drive (Renewed) : Electronics
Amazon.com: Seagate One Touch, 5TB, Portable External Hard Drive, PC Notebook & Mac USB 3.0, Space Grey, 1 Year Mylio Create, 4 mo Adobe CC Photography, 2 Year Rescue Services : Electronics
Amazon.com: WD 4TB USB 3.0 My Passport Portable External Hard Drive - Black (WDBYFT0040BBK) (Renewed) : Electronics
Amazon.com: Toshiba N300 4TB NAS 3.5-Inch Internal Hard Drive - CMR SATA 6 GB/s 7200 RPM 256 MB Cache - HDWG440XZSTA : Electronics
Amazon.com: Seagate Game Drive 4TB External Hard Drive Portable HDD - Compatible With PS4 (STGD4000400) blue : Electronics
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Amazon.com: ADATA HD710 Pro 4TB USB 3.1 IP68 Waterproof/Shockproof/Dustproof Ruggedized External Hard Drive, Black (AHD710P-4TU31-CBK) : Electronics
Amazon.com: Western Digital 4TB WD Red Plus NAS Internal Hard Drive HDD - 5400 RPM, SATA 6 Gb/s, CMR, 256 MB Cache, 3.5" -WD40EFPX : Electronics
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Amazon.com: Seagate One Touch 4TB External Hard Drive HDD – Black USB 3.0 for PC Laptop and Mac, 1 year MylioCreate, 4 Months Adobe Creative Cloud Photography Plan (STKC4000410) : Electronics
Amazon.com: Transcend 4TB USB 3.1 Gen 1 StoreJet 25H3B SJ25H3B Rugged External Hard Drive TS4TSJ25H3B Blue : TRANSCEND: Electronics
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Amazon.com: WD 4TB My Passport Portable External Hard Drive with backup software and password protection, Black - WDBPKJ0040BBK-WESN : Electronics
