This is Hikvision OEM NVR, manufactory is HIKVISION. Functions identical to Hikvision NVR DS-7608NI-Q1/8P ！. Hikvision OEM. 8-ch 1U 8 PoE 4K NVR. HDMI Output 1-ch, 4K (4096 x 2160)/30 Hz, 4K (3840 x 2160)/30 Hz, 2K (2560 x 1440)/60 Hz, 1920 x 1080/60 Hz, 1600 x 1200/60 Hz, 1280 x 1024/60 Hz, 1280 x 720/60 Hz;1-ch, 4K（4096x2160）/30Hz，4K (3840×2160) /30Hz, 2K（2560×1440）/60Hz，1920×1080/60Hz，1600×1200/60Hz，1280×1024/60Hz，1280×720/60Hz; HDMI/VGA simultaneous output,;1-ch, 4K (3840 × 2160)/30Hz, 1920 × 1080p/60Hz, 1600 × 1200/60Hz, 1280 × 1024/60Hz, 1280 × 720/60Hz, 1024 × 768/60Hz; ,HDMI/VGA simultaneous output.