Western Digital WD Black 4TB WD4003FZEX 7200RPM SATA 64MB Cache 3.5" HDD UnitWestern Digital WD Black 4TB internal hard drive, Model WD4003FZEX. The label confirms 4.0TB capacity, SATA interface, 64MB cache, and 7200 RPM. WD identifies the WD4003FZEX as a 4TB WD Black drive.The drive shown is WD Re-certified and has a manufacture date of 12 FEB 2014. It is a 3.5-inch SATA hard drive designed for desktop use.The drive is used and shows cosmetic signs of previous use, including scratches, stickers, and surface wear. Please review all photos carefully for the exact condition.- 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.