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![Amazon.com: WD Purple 6TB Surveillance Hard Disk Drive - 5400 RPM Class SATA 6 Gb/s 64MB Cache 3.5 Inch - WD60PURX [Old Version] (Certified Refurbished) : Electronics](https://m.media-amazon.com/images/I/71Wm7Z624OL.jpg "Amazon.com: WD Purple 6TB Surveillance Hard Disk Drive - 5400 RPM Class SATA 6 Gb/s 64MB Cache 3.5 Inch - WD60PURX [Old Version] (Certified Refurbished) : Electronics")
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