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WD40PURX 4TB Surveillance Class Hard Drive from WD
WD Purple 4TB Surveillance Hard Disk Drive - 5400 RPM Class SATA 6 Gb/s 64MB Cache 3.5 Inch - WD40PURZ
ST4000VX006 Seagate Surveillance 4TB 5900RPM SATA 6Gbps 64MB Cache 3.5-inch Internal Hard Drive
Surveillance Grade Hard Drive for your Surveillance System (1TB-20TB)
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