The Western Digital Purple 1TB Internal 3.5" Surveillance Hard Disk Drive is designed for CCTV systems, providing reliable storage for video footage. With a SATA III interface and a rotation speed of 5400 RPM, this HDD offers smooth performance for continuous recording. The purple colour indicates its specialization for surveillance purposes, making it a suitable choice for security installations. Ideal for desktop use, this HDD is a dependable option for storing and accessing large amounts of data in a CCTV setup.