NVR4104-P-4KS3 | Video input channels 4 channels | Video recording modes 720p/1080p/960p | Video motion detection Yes | Maximum storage capacity 20 TB | HDD interface SATA | 1xEthernet LAN (RJ-45) ports | 4xPower over Ethernet (PoE) ports quantity | Rack mounting Yes | Rack capacity 1U