Option : No Hard Drive; 2x Cameras. 4 channels NVR(No Hard Drive) with 2pcs WiFi cameras. 4 channels NVR(No Hard Drive) with 4pcs WiFi cameras. Option :500GB Hard Drive; 2x Cameras. 4 channels NVR(500GB Hard Drive Preinstalled) with 2pcs WiFi cameras. Option :500GB Hard Drive; 4x Cameras. 4 channels NVR(500GB Hard Drive Preinstalled) with 4pcs WiFi cameras.
