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WD3200AAKS-00V1A0 – Western Digital 320GB 7200 RPM SATA 3.5″ HDD – Disk Drive Finder
320GB Seagate Barracuda 7200.11 SATA 3.5" Hard Drive (16MB cache, 7200rpm)
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Amazon.com: WD Blue 320GB Desktop Hard Disk Drive - 7200 RPM SATA 6 Gb/s 16MB Cache 3.5 Inch - WD3200AAKX : Electronics