MaxDigitalData 2TB 64MB Cache 7200RPM SATA 6.0Gb/s 3.5inch Surveillance Hard Drive (MDD2TSATA6472DVR) are the high performance and reliable choice for always-on 24/7 applications. They are designed for Desktop PC, NAS, media center, media server, surveillance DVR, digital signage and other AV systems requiring perfect audio and video, low heat, and long term reliability. Ideal For Lots of storage in Desktop PCs, Workstation PC, All-in-One PC, NAS, CCTV DVR, Surveillance System devices. MDD 3.5" 2TB SATA 6.0Gb/s Internal Desktop HDD is fully compatible with any CCTV, DVR, NAS, External Enclosure, PC/Mac Desktop Computer with SATA 6.0Gb/s interface. Features: Form Factor: 3.5" SATA 6.0Gb/s Desktop Hard Drive Capacity: 2TB Buffer Size: 64MB Cache Rotation Speed: 7200RPM Interface: SATA 6.0Gb/s