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.
64-ch
320Mbps/256Mbps
19-inch rack-mounted 2U chassis
Synchronous 2-ch HDMI, 2-ch VGA and HDMI1 4K (3840 x 2160) Resolution
