WD Purple 1TB Surveillance Hard Disk Drive - 5400 RPM Class SATA 6 Gb/s 64MB Cache 3.5 Inch - WD10PURZ
Western Digital 1tb Purple Hard Drive 5400rpm SATA III 3.5' Internal Surveillance Hard Disk Wd10purz SSD/HDD - China 1 Tb HDD and Wd HDD price | Made-in-China.com