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Amazon.com: Seagate Pipeline HD 500GB 5900RPM 8MB Cache SATA 3.0Gb/s 3.5in Internal Hard Drive - ST3500312CS (for Surveillance System, CCTV DVR) - 3 Year Warranty (Renewed) : Electronics
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Amazon.com: Seagate Pipeline HD 500 GB, Internal, 5900 RPM, 3.5" (ST3500414CS) Hard Drive : Electronics
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Seagate Pipeline HD ST2000VM002 2TB 5900 RPM 64MB Cache SATA 3.0Gb/s 3.5" Internal Hard Drive Bare Drive - Newegg.com
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