1080N/720P realtime, H.264 video compression. 1 HDMI/1 VGA, 4ch Video in, 1 Audio in/1 Audio out,1 RJ45(100M),2 USB, ,Penta-brid(CVBS/HDCVI/AHD/TVI/IP self-adaptive, 4+1 IP camera input, up to 2Mp)