IP video input 4-ch - Power ≤ 65 W - Audio output 1-ch, RCA (Linear, 1 KΩ) HDMI output resolution :4K (3840 × 2160)/30Hz, 1920 × 1080/60Hz, 1600 × 1200/60Hz, 1280 × 1024/60Hz, 1280 × 720/60Hz, 1024 × 768/60Hz ecording resolution 8MP/6MP/5MP/4MP/3MP/1080p/UXGA/720p/VGA/4CIF/DCIF/2CI F/CIF/QCIF Hard disk Capacity Up to 6TB capacity for each disk - USB interface Front panel: 1 × USB 2.0; Rear panel: 1 × USB 2.0 Working temperature -10 to +55° C (14 to 131° F) - Dimensions (W × D × H) 315 × 240 × 48 mm (12.4" × 9.4" × 1.9")