![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://images-na.ssl-images-amazon.com/images/I/61UDbxdRV8L._AC_UL210_SR210,210_.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 4TB WD Red Plus NAS Internal Hard Drive HDD - 5400 RPM, SATA 6 Gb/s, CMR, 64 MB Cache, 3.5" - WD40EFRX : Electronics Amazon.com: Western Digital 4TB WD Red Plus NAS Internal Hard Drive HDD - 5400 RPM, SATA 6 Gb/s, CMR, 64 MB Cache, 3.5" - WD40EFRX : Electronics](https://m.media-amazon.com/images/I/71AL3OYqTlL._AC_UF894,1000_QL80_.jpg)
Amazon.com: Western Digital 4TB WD Red Plus NAS Internal Hard Drive HDD - 5400 RPM, SATA 6 Gb/s, CMR, 64 MB Cache, 3.5" - WD40EFRX : 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/81py5g+it9L._AC_UF894,1000_QL80_.jpg)
Amazon.com: WD40EZRX Western Digital 4TB Internal Hard Drive IntelliPower 64MB Cache SATA 6.0Gb : Electronics
![WD40PURX-64GVNYO Western Digital Purple 4TB 5400RPM SATA 6Gbps 64MB Cache 3.5-inch Internal Hard Drive WD40PURX-64GVNYO Western Digital Purple 4TB 5400RPM SATA 6Gbps 64MB Cache 3.5-inch Internal Hard Drive](https://cdn11.bigcommerce.com/s-n2pgpewhfn/images/stencil/500x659/products/1412308/1399080/WD40PURX-64GVNYO-lg__97260.1671867478.jpg?c=2)