UNV - 4 HDDs 32-Ch 2U Digital Video Recorder, Support H.265/H.264 video formats, Support TVI, AHD, CVI, CVBS, IP cameras with adaptive access, Support 1-ch CVBS output, 1-ch VGA output, 2-ch HDMI, HDMI2 output at up to 4K(3840 x 2160), HDMI1 and VGA simultaneous output, HDMI2 and HDMI1/VGA independent output, Long transmission distance over coaxial cable, 4 SATA interfaces Up to 16 TB for each HDD (The maximum HDD capacity varies with environment temperature), AC 100 ~ 240 V.