Seagate BarraCuda ST4000DM004 Desktop Hard Drive - Drive Solutions
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Refurbished: 2AN17V-566 - Seagate BarraCuda 4TB 5400RPM SATA 6Gb/s 128MB Cache 512e 2.5-inch Hard Drive - Newegg.com
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Amazon.com: Seagate BarraCuda Pro 4TB Internal Hard Drive Performance HDD – 3.5 Inch SATA 6 Gb/s 7200 RPM 128MB Cache for Computer Desktop PC, Data Recovery (ST4000DM006) : Electronics
Seagate BarraCuda 4TB 5400 RPM 3.5" Hard Drives - Newegg.com