Seagate FireCuda 4TB 7200 RPM SATA III 6Gb/s 3.5" Internal CMR Hard Drive - Micro Center
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HGST Deskstar NAS 3.5" 4TB 7200 RPM 64MB Cache SATA 6.0Gb/s High-Performance Hard Drive for Desktop NAS Systems Retail Packaging - Newegg.com
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Seagate Enterprise Capacity 3.5'' HDD 4TB 7200 RPM 512e SATA 6Gb/s 128MB Cache Internal Hard Drive ST4000NM0115 - Newegg.com
Dell 9ZM270-150 4TB 3.5" SAS Hard Disk Drive HDD (ST4000NM0023)
Seagate FireCuda 4TB 7200 RPM SATA III 6Gb/s 3.5" Internal CMR Hard Drive - Micro Center
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WD Red Pro 4TB 7200 RPM 3.5" Internal Hard Drive - Newegg.com
HGST HUS726T4TALE6L4 Ultrastar 4TB 7200 RPM 512e SATA 6Gb/s 3.5-Inch Internal Hard Disk Drive
HGST Deskstar 3.5-Inch 4TB 7200 RPM SATA III 6Gbps 64MB Cache (0F14681) | eBay
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