Upgrade your security system with the WD Purple 4TB Surveillance HDD—a powerful 3.5-inch hard drive engineered for 24/7 monitoring and seamless high-definition video recording. Boasting robust reliability and ample capacity, this SATA hard disk is optimized for compatibility with a wide range of DVR and NVR systems, ensuring smooth footage capture and playback. Its cutting-edge technology minimizes interruptions, supports multiple camera streams, and offers low power consumption for long-lasting performance. The sleek purple casing not only looks professional but also stands out in your hardware setup, making it the ideal choice for demanding surveillance environments.