4-Channel 2-Bay Desktop Standalone NVR with 4-port PoE connectors, Recording Throughput 300 Mbps, HDMI Port, Remote Access, Video Export via USB, 4-Channel Synchronized Playback, 4-channel free license included, Supports External Storage (iSCSI), Plug &amp; Play with Built-in DHCP Server, 2-Bay (Storage Disks not included), Audio, DI/DO, DC 48V