3TB HDD Sata 6G Special CCTV. 64MB buffer.
![Western Digital Purple 3TB Surveillance Hard Disk Drive - 5400 RPM Class SATA 6 Gb/s 64MB Cache 3.5 Inch - WD30PURX [Old Version]](https://m.media-amazon.com/images/W/IMAGERENDERING_521856-T1/images/S/aplus-media/mg/93d664fe-9734-4c89-9bf5-e0ae9efc6758._SR285,285_.jpg "Western Digital Purple 3TB Surveillance Hard Disk Drive - 5400 RPM Class SATA 6 Gb/s 64MB Cache 3.5 Inch - WD30PURX [Old Version]")
Western Digital Purple 3TB Surveillance Hard Disk Drive - 5400 RPM Class SATA 6 Gb/s 64MB Cache 3.5 Inch - WD30PURX [Old Version]
WD Purple 3TB Surveillance Hard Disk Drive -5400 RPM Class SATA 6Gb/s 64MB Cache 3.5 Inch Model WD30PURX
![Western Digital Purple 3TB Surveillance Hard Disk Drive - 5400 RPM Class SATA 6 Gb/s 64MB Cache 3.5 Inch - WD30PURX [Old Version]](https://m.media-amazon.com/images/W/IMAGERENDERING_521856-T1/images/I/71qpD0ZjWJL.jpg "Western Digital Purple 3TB Surveillance Hard Disk Drive - 5400 RPM Class SATA 6 Gb/s 64MB Cache 3.5 Inch - WD30PURX [Old Version]")
Western Digital Purple 3TB Surveillance Hard Disk Drive - 5400 RPM Class SATA 6 Gb/s 64MB Cache 3.5 Inch - WD30PURX [Old Version]
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![Western Digital Purple 3TB Surveillance Hard Disk Drive - 5400 RPM Class SATA 6 Gb/s 64MB Cache 3.5 Inch - WD30PURX [Old Version]](https://m.media-amazon.com/images/W/IMAGERENDERING_521856-T1/images/I/71lcjkt+ERL.jpg "Western Digital Purple 3TB Surveillance Hard Disk Drive - 5400 RPM Class SATA 6 Gb/s 64MB Cache 3.5 Inch - WD30PURX [Old Version]")
Western Digital Purple 3TB Surveillance Hard Disk Drive - 5400 RPM Class SATA 6 Gb/s 64MB Cache 3.5 Inch - WD30PURX [Old Version]
WD Purple 3TB Surveillance Hard Disk Drive - 5400 RPM Class SATA 6Gb/s 64MB Cache 3.5 Inch WD30PURX - Newegg.com
WD Purple 3TB Surveillance Hard Disk Drive -5400 RPM Class SATA 6Gb/s 64MB Cache 3.5 Inch Model WD30PURX
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