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
• H.265+, H.265, H.264+, H.264, MPEG4
• Up to 12 MP Resolution Recording
• Connect Up to 32/64 IP Cameras with 320 Mbps Incoming Bandwidth
• Up to 8 SATA HDD and 1 eSATA Interface
• HDD Hot-Swap with Configurable RAID 0, RAID 1, RAID 5, RAID 6, RAID 10
• VCA Detection Alarm and VCA Search
• RS-485 Control Hikvision-C and Pelco D/P Protocol
• Instant Camera Playback During MultiChannel Live View
• 16-ch Synchronous Playback
• Reverse Playback for Multi-Channels
• Smart Search and Playback
• Custom Tags, Search, and Playback by Tags
• Alarm I/O, 16/4
• HDD Quota and Group Management
• HikConnect DDNS
• Third-Party Network Cameras Supported