UNV - 1 HDD 4-Ch 1U DVR, Support TVI, AHD, CVI, CVBS, IP cameras with adaptive access, Support audio over coaxial cable(only for TVI cameras), Support H.265/H.264 video formats, Support 1-ch CVBS output, 1-ch VGA output, 1-ch HDMI output at up to 4K(3840 x 2160), 1 SATA interface Up to 16 TB for each HDD (The maximum HDD capacity varies with environment temperature), = 10W.