Seagate Exos X20 18TB ST18000NM000D SAS 7200RPM 3.5" HDD Enterprise Hard DriveSeagate Exos X20 18TB enterprise hard drive, Model ST18000NM000D. The label in the photos clearly confirms the 18TB capacity, Exos X20 series, SAS interface, model ST18000NM000D, P/N 3DL203-001, and firmware E001.This is a 3.5-inch 7200 RPM enterprise SAS HDD designed for server and data-center storage. Seagate specifies the ST18000NM000D as an 18TB 12Gb/s SAS model with 256MB cache, CMR recording, helium-sealed construction, and support for 512e/4Kn sector formats.The drive is used and shows visible signs of previous use, including scratches, labels, and cosmetic wear.- No other accessories included We have 30 day returns money back guarantee . We do our best to describe everything accurately. This item is sold as shown are pulled from working environments and may include components that are untested, incomplete, or non-functional. While we do our best to describe each item accurately, we cannot guarantee the performance or compatibility of every part. See photos for more details. By purchasing, you acknowledge and accept this item is being sold as-is with no guarantees beyond what is stated.