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.
32 IP Camera Inputs @ 256 Mbps
265+/H.265/H.264+/H.264/MPEG4
4K (3840 × 2160) HDMI Video Output
4x SATA HDD, DVD-RW Option
Smart Search and Smart Playback
