quick view Add to Cart WD WD Purple 4TB Surveillance Internal Hard Drive HDD WD42PURZ - SATA 6 Gb/s, 256 MB Cache, 3.5" MSRP: $119.99 $89.95 WD Purple 4TB Surveillance Internal Hard Drive HDD WD42PURZ WD Purple drives are engineered specifically for surveillance to help withstand the elevated heat fluctuations and equipment vibrations... Add to Cart Add to Wish List Add to My Wish List Create New Wish List