The OPEN BOX Western Digital Purple WD44PURZ-85CPDY0 4TB Surveillance HDD is a high-quality hard drive designed specifically for surveillance systems. With a storage capacity of 4TB, this SATA interface drive is perfect for storing large amounts of video footage. The 3.5-inch form factor and 5.4K RPM rotation speed ensure efficient data access and retrieval. Manufactured by Western Digital in Thailand, this HDD provides reliable performance for your security camera storage needs.