![Amazon.com: SEAGATE ST4000VX007 Skyhawk 4TB Surveillance Hard SATA 6Gb/s 64MB Cache 3.5-Inch Internal Drive-Frustration Free Packaging (ST4000VXZ07) Mechanical Hard Disk : Electronics Amazon.com: SEAGATE ST4000VX007 Skyhawk 4TB Surveillance Hard SATA 6Gb/s 64MB Cache 3.5-Inch Internal Drive-Frustration Free Packaging (ST4000VXZ07) Mechanical Hard Disk : Electronics](https://m.media-amazon.com/images/I/71EQYqPqtbL.jpg)
Amazon.com: SEAGATE ST4000VX007 Skyhawk 4TB Surveillance Hard SATA 6Gb/s 64MB Cache 3.5-Inch Internal Drive-Frustration Free Packaging (ST4000VXZ07) Mechanical Hard Disk : Electronics
![Amazon.com: WD Purple 4 TB Surveillance Hard Disk Drive, Intellipower 3.5 Inch SATA 6 Gb/s 64 MB Cache 5400 RPM : Electronics Amazon.com: WD Purple 4 TB Surveillance Hard Disk Drive, Intellipower 3.5 Inch SATA 6 Gb/s 64 MB Cache 5400 RPM : Electronics](https://m.media-amazon.com/images/I/71d0vImsbeL.jpg)
Amazon.com: WD Purple 4 TB Surveillance Hard Disk Drive, Intellipower 3.5 Inch SATA 6 Gb/s 64 MB Cache 5400 RPM : Electronics
![WD Purple 4TB Surveillance Internal Hard Drive Disk 3.5" 64M Cache SATA III 6Gb/s 1TB 2TB 3TB HDD HD Harddisk for CCTV DVR NVR _ - AliExpress Mobile WD Purple 4TB Surveillance Internal Hard Drive Disk 3.5" 64M Cache SATA III 6Gb/s 1TB 2TB 3TB HDD HD Harddisk for CCTV DVR NVR _ - AliExpress Mobile](https://ae01.alicdn.com/kf/S932bcc61836c4ac0a093674f1bc7b1edQ/WD-Purple-4TB-Surveillance-Internal-Hard-Drive-Disk-3-5-64M-Cache-SATA-III-6Gb-s.jpg)
WD Purple 4TB Surveillance Internal Hard Drive Disk 3.5" 64M Cache SATA III 6Gb/s 1TB 2TB 3TB HDD HD Harddisk for CCTV DVR NVR _ - AliExpress Mobile
![Amazon.com: WD Purple 4TB Surveillance Hard Disk Drive - 5400 RPM Class SATA 6 Gb/s 64MB Cache 3.5 Inch - WD40PURX (Renewed) : Electronics Amazon.com: WD Purple 4TB Surveillance Hard Disk Drive - 5400 RPM Class SATA 6 Gb/s 64MB Cache 3.5 Inch - WD40PURX (Renewed) : Electronics](https://m.media-amazon.com/images/I/41hEUD3j66L._AC_UF894,1000_QL80_.jpg)
Amazon.com: WD Purple 4TB Surveillance Hard Disk Drive - 5400 RPM Class SATA 6 Gb/s 64MB Cache 3.5 Inch - WD40PURX (Renewed) : 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/asr/293d934c-3969-4595-83d2-a8fbb66a0639_2.e568b8305186305bbe19a35c3996b935.jpeg?odnHeight=768&odnWidth=768&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: Western Digital 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD42PURZ : Electronics Amazon.com: Western Digital 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD42PURZ : Electronics](https://m.media-amazon.com/images/I/71KGby9PZkL.jpg)
Amazon.com: Western Digital 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD42PURZ : Electronics
![Western Digital WD40PURZ Purple 4TB Surveillance Hard Drive - 5400 RPM Class, SATA 6 Gb/s, 64 MB Cache, 3.5" Hard Drive - TechnoDeals USA Western Digital WD40PURZ Purple 4TB Surveillance Hard Drive - 5400 RPM Class, SATA 6 Gb/s, 64 MB Cache, 3.5" Hard Drive - TechnoDeals USA](https://cdn11.bigcommerce.com/s-14ubrv87xh/images/stencil/1280x1280/products/5811/4146/WD40PURZ__17540.1570128684.1280.1280__16538.1645811729.png?c=2)
Western Digital WD40PURZ Purple 4TB Surveillance Hard Drive - 5400 RPM Class, SATA 6 Gb/s, 64 MB Cache, 3.5" Hard Drive - TechnoDeals USA
![Seagate SkyHawk 4TB Surveillance Hard Drive - SATA 6Gb/s 64MB Cache 3.5-Inch Internal Drive (ST4000VX007) Seagate SkyHawk 4TB Surveillance Hard Drive - SATA 6Gb/s 64MB Cache 3.5-Inch Internal Drive (ST4000VX007)](https://amcrest.com/media/catalog/product/cache/9b35a097e336151214b669c0ac2cd5a5/h/d/hdd4tb-st_2_1.jpg)
Seagate SkyHawk 4TB Surveillance Hard Drive - SATA 6Gb/s 64MB Cache 3.5-Inch Internal Drive (ST4000VX007)
![Amazon.com: WD Purple NV 4TB Surveillance Hard Disk Drive - Intellipower SATA 6 Gb/s 64MB Cache 3.5 Inch - WD4NPURX : Electronics Amazon.com: WD Purple NV 4TB Surveillance Hard Disk Drive - Intellipower SATA 6 Gb/s 64MB Cache 3.5 Inch - WD4NPURX : Electronics](https://m.media-amazon.com/images/I/81rvvyp+35L.jpg)
Amazon.com: WD Purple NV 4TB Surveillance Hard Disk Drive - Intellipower SATA 6 Gb/s 64MB Cache 3.5 Inch - WD4NPURX : Electronics
![WD Purple 4TB Surveillance Hard Disk Drive - 5400 RPM Class SATA 6 Gb/s 64MB Cache 3.5 Inch - WD40PURZ WD Purple 4TB Surveillance Hard Disk Drive - 5400 RPM Class SATA 6 Gb/s 64MB Cache 3.5 Inch - WD40PURZ](https://cdn11.bigcommerce.com/s-shevscav5p/images/stencil/1280x1280/products/6090/21513/wd-purple-4tb__36465.1657819895.jpg?c=2)
WD Purple 4TB Surveillance Hard Disk Drive - 5400 RPM Class SATA 6 Gb/s 64MB Cache 3.5 Inch - WD40PURZ
![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)