Click to expand Tap to zoom 4 TB Surveillance Hard Drive for NVR or DVR by Western Digital Sale $90.00 | / SKU GS-R-1059 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart Refurbished! 4000GB Hard Drive designed to work with all of our DVR's, Hybrids, and NVR's Reliable High Quality build to meet the demands of 24/7 operation Easy Installation-----HDDS WILL NOT BE INSTALLED INTO NVRS OR DVRS-----