This HGST Ultrastar 4TB Internal Desktop Drive is a high-quality SSD (Solid State Drive) that is compatible with PCs and has a rotation speed of 7200 RPM. The form factor is 3.5 inches, making it easy to install and use. The item is silver in color, has a height of 1.03 inches, a width of 5.79 inches, and a length of 4 inches. Additionally, this hard drive has a storage capacity of 4TB, with a cache of 128MB. The item model is HUS726060ALE610 and belongs to the Ultrastar 7K6000 product line. An eSATA interface allows for high-speed data transfer. This drive is ideal for use in desktop computers and is capable of handling large amounts of data.