Network Video Recorder H.265, H.264+, H.264, MPEG4 Video Formats Up to 12 Megapixels Resolution Recording Synchronous 2-ch HDMI, 2-ch VGA and HDMI1 4 K (3840 x 2160) Resolution Connect Up to 32/64 IP Cameras with 320 Mbps Incoming Bandwidth Up to 8 SATA HDD and 1 eSATA Interface for Record and Backup Redundant Power Supply To Improve System Stability HDD Hot-Swap with Configurable RAID 0, RAID 1, RAID 5, RAID 10 VCA Detection Alarm and VCA Search RS-485 Control Hikvision-C and Pelco D/P Protocol Instant Camera Playback During Multi-Channel Live View 16-ch Synchronous Playback Reverse Playback for Multi-Channels Smart Search and Playback for Efficiency Customization of Tags, Searching, and Playing Back by Tags Alarm I/O, 16/4 HDD Quota and Group Management Hikvision DDNS (Dynamic Domain Name System) Third-Party Network Cameras Supported