This Western Digital Caviar SE 160GB HD is a reliable internal desktop drive that provides 7200 RPM and 8MB cache. It is compatible with HDD drive types and has a form factor of 3.5 inches. The product line is Caviar SE and the model number is WD Caviar. The storage capacity is 160GB and the unit quantity is one. This hard drive is new and sealed, making it a great addition to your computer system.