Detail overview General Information: Manufacturer : SEAGATE Manufacturer Model Number:st4000nm0023 Manufacturer Part Number : 9ZM270-150 Product Name : Hard Drive Technical Information: Storage Capacity : 4tb Rotational Speed : 7200rpm Form Factor : 3.5 Inch Enclosure : Internal Interfaces : Serial Attached Scsi 2(sas-600) Maximum Data Transfer Rate: 600mbps(external) Condition : Refurbished (dell Oem). Availability : In Stock. Our Warranty : 30 Days.