The NEW Western Digital WD Purple 8TB 3.5" SATA Surveillance Hard Drive is a high-capacity internal desktop drive designed for surveillance systems. With a storage capacity of 8TB and a transfer rate of 550 Mbps, this HDD drive is perfect for storing large amounts of video footage. The drive is compatible with PC systems and features a SATA III interface for fast data access. Its purple color adds a touch of uniqueness to your storage setup, while the 256MB cache ensures efficient performance for your storage needs.