The Hikvision DS-7604NI-K1/4P 4port NVR K series 4K is a 4 Channel NVR with 1 hard drive slot, up to 8 Megapixel Resolution Recording, 40 Mbps Incoming Bandwidth, Supports H.265, H.265+, H.264+, and H.264, Synchronous HDMI and VGA Output 1920 x 1080p Resolution, 1x SATA Interface Plug & Play w/Up to 4 Independent PoE Network Connections. Supports Network Detection, Including Network Delay, Packet Loss, Alarm and Audio I/O. Supports network detection, including network delay, packet loss, etc. 4-ch network cameras can Be connected and no HDD Included.