Analog video input 8-ch BNC interface (1.0 Vp-p, 75 Ω), supporting coaxitron connection.Two-way audio 1-ch, RCA (2.0 Vp-p, 1 KΩ) (using the first audio input).IP video input 8-ch (up to 16-ch) Up to 8 MP resolution Support H.265+/H.265/H.264+/H.264 IP cameras.When 8 MP Lite mode enabled: 8 MP fps *: 8 MP Lite is only available for DS-7204HUHI-K1/E. Encoding resolution Main stream: When 8 MP Lite mode is not enabled: 8 fps/4 fps/3 fps fps (P)/30 fps (N) *: 8 fps is only available for channel 1 of DS-7204HUHI-K1/E.