![Amazon.com: Western Digital 3TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 64 MB Cache, 3.5" - WD30PURZ : Electronics Amazon.com: Western Digital 3TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 64 MB Cache, 3.5" - WD30PURZ : Electronics](https://m.media-amazon.com/images/I/81kdatS-wgL.jpg)
Amazon.com: Western Digital 3TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 64 MB Cache, 3.5" - WD30PURZ : Electronics
![Amazon.com: Western Digital Purple 3TB Surveillance Hard Disk Drive - 5400 RPM Class SATA 6 Gb/s 64MB Cache 3.5 Inch - WD30PURX [Old Version] : Electronics Amazon.com: Western Digital Purple 3TB Surveillance Hard Disk Drive - 5400 RPM Class SATA 6 Gb/s 64MB Cache 3.5 Inch - WD30PURX [Old Version] : Electronics](https://m.media-amazon.com/images/I/81fWDTJVIPL.jpg)
Amazon.com: Western Digital Purple 3TB Surveillance Hard Disk Drive - 5400 RPM Class SATA 6 Gb/s 64MB Cache 3.5 Inch - WD30PURX [Old Version] : Electronics
![WD 3TB Elements Portable External Hard Drive - USB 3.0 - WDBU6Y0030BBK-WESN : Electronics - Amazon.com WD 3TB Elements Portable External Hard Drive - USB 3.0 - WDBU6Y0030BBK-WESN : Electronics - Amazon.com](https://m.media-amazon.com/images/I/71SqsJ7pAlL._AC_UF350,350_QL80_.jpg)
WD 3TB Elements Portable External Hard Drive - USB 3.0 - WDBU6Y0030BBK-WESN : Electronics - Amazon.com
![Western Digital WD Purple 3TB 3.5" Surveillance Disk Hard Drive SATAIII 6.0Gb/s for cctv Camera AHD DVR IP Camera NVR WD30EJRX Western Digital WD Purple 3TB 3.5" Surveillance Disk Hard Drive SATAIII 6.0Gb/s for cctv Camera AHD DVR IP Camera NVR WD30EJRX](https://ae01.alicdn.com/kf/HTB1Acb1cHuWBuNjSszgq6z8jVXaV/Western-Digital-WD-Purple-3TB-3-5-Surveillance-Disk-Hard-Drive-SATAIII-6-0Gb-s-for.jpg)
Western Digital WD Purple 3TB 3.5" Surveillance Disk Hard Drive SATAIII 6.0Gb/s for cctv Camera AHD DVR IP Camera NVR WD30EJRX
![Amazon.com: Western Digital 3TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 64 MB Cache, 3.5" - WD30PURZ : Electronics Amazon.com: Western Digital 3TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 64 MB Cache, 3.5" - WD30PURZ : Electronics](https://m.media-amazon.com/images/I/71giWLo+PFL.jpg)
Amazon.com: Western Digital 3TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 64 MB Cache, 3.5" - WD30PURZ : Electronics
![Amazon.com: WD Black 3TB Performance Desktop Hard Disk Drive - 7200 RPM SATA 6 Gb/s 64MB Cache 3.5 Inch - WD3003FZEX : Electronics Amazon.com: WD Black 3TB Performance Desktop Hard Disk Drive - 7200 RPM SATA 6 Gb/s 64MB Cache 3.5 Inch - WD3003FZEX : Electronics](https://m.media-amazon.com/images/I/5136p+6mmDL._AC_UF894,1000_QL80_.jpg)