4-ch 1U K Series AcuSense 4K NVR Up to 4-ch IP camera inputs H.265+/H.265/H.264+/H.264 video formats Up to 2-ch@12 MP or 4-ch@8 MP or 8-ch@4 MP or 16-ch@1080p decoding capacity Up to 40 Mbps incoming bandwidth Adopt Hikvision Acusense technology to minimize manual effort and security costs Key Feature  Up to 4-ch IP camera inputs  H.265+/H.265/H.264+/H.264 video formats  Up to 2-ch@12 MP or 4-ch@8 MP or 8-ch@4 MP or 16-ch@1080p decoding capacity  Up to 40 Mbps incoming bandwidth  Adopt Hikvision Acusense technology to minimize manual effort and security costs Smart Function  1-ch video analysis for human and vehicle recognition to reduce false alarm  1-ch facial recognition for video stream, or 2-ch facial recognition for face picture  Smart search for the selected area in the video, and smart playback to improve the playback efficiency Professional and Reliability  H.265+ compression effectively reduces the storage space by up to 75%  Adopt stream over TLS encryption technology which provides more secure stream transmission service HD Video Output  Provide simultaneous HDMI and VGA outputs  HDMI video output at up to 4K resolution Storage and Playback  Up to 1 SATA interface for HDD connection (up to 16 TB)  4-ch synchronous playback Network & Ethernet Access  1 self-adaptive 10/100 Mbps Ethernet interface  Hik-Connect for easy network management