... NVR3804V: 4 channel@D1, 4 channel@720P, 4 channel@1080P IP camera inputs, It can support HDMI, VGA, USB2.0, 8 HDDs ... .NVR3808V: 8 channel@D1, 8 channel@720P, 4 channel@1080P IP camera inputs, It can support HDMI, VGA, USB2.0, 8 HDDs ... / 8ch@720P / 4ch@1080P16ch@D1 / 8ch@720P / 4ch@1080PIP Camera Supported ListArecont Vision, AXIS, Canon, Dynacolor, Panasonic, SAMSUNG, SANYO, SONY, ONVIFVideo Output1 ...