Capacity: 4TBInterface: SATA 6Gb/sCache: 64MBDrive bays supported: 8+Cameras Supported: Up to 64 Transfer Rate: 180MB/sVoltage (5V): ±5%Voltage (12V): ±10%Cycles: 300,000Dimensions (HxWxD): 26.11mm x 101.60mm x 146.99mmWeight: 610 g