Dahua - Digital Video Recorder - XVR4104HS-I - 4 Channels - 5 technologies in 1 (HDCVI+AHD+TVI+ANALOG+IP) and resolution up to 1080N (higher than 720P!), Video compression Smart H.265+ with AI Coding, AI Search, VGA (1080p) and HDMI (1080p), 2 USB 2.0 ports, RCA Audio 1in/1out, support for 1 internal 3.5" SATA HDD up to 6TB (not included), P2P Cloud, ONVIF, RS485 for PTZ control, RJ45 100M Port - ONVIF 16.12 compatible - Dahua - XVR4104HS-X1