Amcrest’s NV4116E-HS NVR comes with a Pre-Installed 4TB Seagate SkyHawk Surveillance Hard Drive. Hard Drive Custom-built for surveillance applications with Image Perfect firmware for crisp, clear, 24×7 video workloads (Supports up to 6TB), while Featuring 16CH Recording, Playback & Live View in up to 4K Resolution @ Real-Time 30fps. | Advanced H. 265 compression technology lets you save on storage space which allows for longer recording times. H. 265 technology compresses your video without sacrificing any of the UltraHD video quality. Intelligent search, playback, and backup functions provide enhanced ease of use and security (for example, motion detection event and exact search functions that are accurate to one second). | Plug & Play setup, Easy to configure, access and control. Scan QR Code on NVR from "Amcrest View" app to instantly access live viewing and playback. Connects to and manages all the WiFi IP cameras on your network directly through their ethernet cables for ultimate ease and convenience in a home security system. | This is a 16CH NVR, that has 8CH PoE Ports and 4TB hard drive. An additional PoE switch will be needed for adding additional PoE cameras to your system. (Recommended Amcrest Switch ASIN B0751K65V5) Conveniently packaged with extras such as USB mouse, network cable, and quick start guide with user manual and CD. | Includes USB backup feature for peace of mind. All systems CE & FCC certified with UL compliant power supplies. for a Full Year from purchase with US Support and US offered exclusively by Amcrest.