H.264, H.265, Smart H.264+, and Smart H.265+. H.265 auto switch AI by Camera: Face detection, perimeter protection, IVS, people counting, heat map, and SMD Perimeter Protection by Camera: 8 channels; Face Detection by Camera: 4 channels; SMD Plus by Camera: 8 channels; Multi-channel Playback: Up to 8 channels for playback; Audio Input: 1 × RCA input; Audio Output: 1 × RCA output; HDD: 1 SATA III ports, up to 10 TB for a single HDD. The maximum HDD capacity varies with environment temperature; Network: 1 × RJ-45, 10/100 Mbps self-adaptive Ethernet port; Power Supply: 12 V DC, 2 Aen