XVR301-04G3 - Support H.265/H.264 video formats - Support audio over coaxial cable - Support TVI, AHD, CVI, CVBS Up To 5mp SupportIP cameras with adaptive access Up to 4mp - 4channel BNC input - IP Video Input 2-ch(only IP up to 6ch), each channel up to 4MP - Support 1-ch HDMI output, 1-ch VGA output at up to 1920*1080 - Long transmission distance over coaxial cable - Support mainstream cameras of ONVIF and RTSP protocols - Support 1 SATA HDD, up to 8TB capacity for each disk - Dimensions 260mm ×226mm× 47mm