Model: DH-XVR5104HS-4KL-I3 Number of Channels: 4 live camera channels. Supports Cameras: HDCVI / AHD / TVI / CVBS, in addition to IP cameras depending on device settings. Recording Resolution: Up to 4K in some recording modes, depending on camera type and frame rate. Hard Disk: Supports internal SATA HDD installation for recording. Remote Viewing: Supports viewing and recording via mobile and network. Output to Monitor: HDMI and VGA. Power Rating on Device: 12V / 2A. Supports advanced smart functions that vary depending on the firmware version and cameras used.