Western Digital Ultrastar DC HC310 HUS726T4TALA6L4 (0B35950) 4TB 7200RPM 256MB Cache SATA 6Gb/s 3.5" Data Center Enterprise Hard Drive - 5 Year Warranty
HGST Ultrastar DC HC310 HUS726T4TALA6L4 4 TB Hard Drive - 3.5" Internal - SATA (SATA/600)
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WD Ultrastar DC HC310 HUS726T4TALA6L4 - Hard Drive - 4 TB - SATA 6Gb/s - 0B35950 829686005167 | eBay
Cheap Western Digital HUS726T4TALA6L4 4TB 7.2K RPM SATA 6GBPS | New