When upgrading NVR from v3.4.x to v4.x, please be sure NVR firmware is at v3.4.92 170518 firmware and perform system factory default before proceed upgrading NVR to v4.x. Failures have NVR at v3.4.92 and perform system factory default prior to upgrading NVR to v4.x could render NVR inoperable.
Up to 12 MP Resolution
Decodes Up to 20 Channels at 1080p
Supports Up to 256 IP Cameras
Two independent HDMI outputs of 4K resolution. Resolution: 4K (4096 × 2160), 4K (3840 × 2160)/30Hz,2K (2560 × 1440)/60 Hz, 1080p (1920 × 1080)/60 Hz,UXGA (1600 × 1200)/60 Hz, SXGA (1280 × 1024)/60Hz, 720p (1280 × 720)/60Hz, XGA (1024 × 768)/60H
768 Mbps/768 Mbps