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![Amazon.com: WD Purple 2TB Surveillance Hard Disk Drive - 5400 RPM Class SATA 6 Gb/s 64MB Cache 3.5 Inch - WD20PURX [Old Version] : Electronics](https://m.media-amazon.com/images/I/61dEavKyBgL._AC_UF894,1000_QL80_.jpg "Amazon.com: WD Purple 2TB Surveillance Hard Disk Drive - 5400 RPM Class SATA 6 Gb/s 64MB Cache 3.5 Inch - WD20PURX [Old Version] : Electronics")
Amazon.com: WD Purple 2TB Surveillance Hard Disk Drive - 5400 RPM Class SATA 6 Gb/s 64MB Cache 3.5 Inch - WD20PURX [Old Version] : Electronics
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Amazon.com: Western Digital - WD Gold 16TB Enterprise Class Hard Disk Drive – 7200 RPM Class SATA 6Gb/s 512MB Cache 3.5 Inch HDD - WD161KRYZ : Electronics
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Amazon.com: Western Digital 2TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 64 MB Cache, 3.5" - WD20PURZ : 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._AC_UF894,1000_QL80_.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")
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
