This Western Digital WD Purple 6TB internal hard drive is perfect for your PC and fits into a 3.5 inch drive bay. The drive features a 256 MB cache and is compatible with HDD drive types. It is designed for surveillance purposes and has a storage capacity of 6 TB. The interface options include SATA III and SATA I. The drive is purple in color and measures 5.7 inches in length, 4 inches in width, and 1 inch in height. It is a reliable choice for storing your important data and can be used in a variety of computer applications. The WD63PURZ model number ensures you are getting a quality product from the Western Digital brand.