Hard drive, Western Digital, 2TB, WD22PURU-78

Capacity: 2TB Form Factor: 3.5-Inch Connector: SATA Compatibility Up to 64 HD cameras Up to 16 drive bays AllFrame firmware technology Interface: SATA Transfer Rate: up to 110MB/s Disk Speed (RPM): 5400 RPM Recording Technology: CMR Cache Size: 64MB Warranty: 3-Year Limited Warranty Dimensions (L x W x H): 5.79" x 4" x 1.03" Weight: 0.99lbs Model Number Operating Temperature: 0°C to 65°C Non-Operating Temperature: -40°C to 70°C Certifications:BSMI, ICES-003/NMB-003, CE, FCC, KC, Maghreb, RCM, UKCA, VCCI, CB-Scheme, TUV, UL