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WD4002FFWX-68TZ4N0 Western Digital Red Pro 4TB 7200RPM SATA 6Gbps 128MB Cache 3.5-inch Internal Hard
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Amazon.com: WD Red Pro 4TB NAS Hard Disk Drive - 7200 RPM SATA 6 Gb/s 64MB Cache 3.5 Inch - WD4001FFSX : Electronics
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