4TB SATA HDD Seagate SkyHawk

Capacity: 4TB
Interface: SATA 6Gb/s
Cache: 64MB
Drive bays supported:  8+
Cameras Supported: Up to 64  
Transfer Rate: 180MB/s
Voltage (5V):  ±5%
Voltage (12V):  ±10%
Cycles: 300,000
Dimensions (HxWxD): 26.11mm x 101.60mm x 146.99mm
Weight: 610 g