Western Digital 4TB Hard Drive For Video Surveillance, Intellipower SATA 6 GB/S 64MB Cache 3.5 Inch, WD40PURX, WD Purple

Hard drive interface: Serial ATA III, Hard drive capacity: 4000 GB, Hard drive form factor: 3.5". Power consumption (standby): 0.4 W, energy consumption (read): 5.1 W, energy consumption (write): 5.1 W. Width: 10.2 cm, Height: 2.61 cm, Depth: 14.7 cm. Hard Drive Hard drive capacity: 4000 GB Hard drive interface: Serial ATA III Hard drive form factor: 3 5 inches. Device type: hard drive Start/stop cycles: 30000. RoHS compatible: yes. Transfer rate