16 Turbo HD/CVI / AHD / CVBS self-adaptive interfaces input, 16-ch video&4-ch audio input, 16-ch IP video input(up to 32-ch IP),H.265+/H.265 compression,4 SATA interfaces, 8 MP@12fps, 5 MP@20fps, 3 MP@18fps,4 MP/1080p/720p/WD1/4CIF/VGA/CIF@25fps (P)/30fps (N), Extended transmission distance over coax cable, 4K UHD output,alarm I/O: 16/4, 1.5U 19" case