The HGST Ultrastar 7K4000 2TB 7200 RPM SAS 6Gbs 3.5" HDD is a high-performance internal desktop drive designed for use in PCs. With a storage capacity of 2TB and a rotation speed of 7200 RPM, this hard drive offers fast data access and storage. The silver-colored HGST Ultrastar drive is part of the Ultrastar product line and features a 64 MB cache for improved performance. Compatible with SAS interface, this HDD is suitable for hot swap applications, making it a reliable choice for computing needs requiring large storage capacity and high speed.