HGST 4TB Coolspin 64MB SATA 6Gb/s 3.5inch Enterprise Hard Drive HMS5C4040BLE640
B HMS5C4040BLE640 (0F23139) 4TB Coolspin 64MB Cache SATA III 6.0Gb/s 3.5" Enterprise Hard Drive (Certified Refurbished) - 3 Year Warranty. Manufacturer Part # HMS5C4040BLE640. Spindle Speed: CoolSpin.