Cool. Quiet. Low Power. Pipeline HD® hard drives are designed to deliver reliable 24×7 operation- optimized for low-power consumption, quiet operation and smooth video streaming. Reliably delivers up to 20 simultaneous streams of HD content Capacities up to 2TB-enough storage for up to 240 hours of HD video Quiet operation to enhance customer viewing and listening experiences Industry-leading reliability 24×7 operational profile to meet the always-on demands on the DVR market Performance Interface SATA 6.0Gb/s Capacity 2TB RPM 5900 RPM Cache 64MB Average Latency 6Gb/s What's in the box Seagate 2TB Video 3,5" internal HDD