16 Turbo HD/CVI / AHD / CVBS interface input, 16-ch video&4-ch audio input, 2-ch IP video input(up to 18-ch IP), H.264/H.264+/H.265+/H.265 video compression, 1 SATA interface,CH01-04: 3MP @ 15fps, CH01-16:1920×1080P @15 fps, 4MP Lite @ 15fps/ch,Extended transmission distance over coax cable, 4K UHD output, standalone 1U case