The NF4-9V is a Panasonic picture-in-picture switch that allows you to view up to four video sources on a single screen. It has a video switching capability of up to eight inputs including computer and cable formats, picture-in-picture display and auto-scanning. The picture-in-picture feature allows you to see all four video sources at once, allowing you to monitor multiple programs, compare results and make decisions quickly. The NF4-9V also features output ports for VGA, HDMI, Component, S-Video and composite. This switch features versatile control options including remote control, front panel buttons and computer control through a control terminal. This switch is compatible with a variety of Panasonic products and can be used with a wide range of displays, projectors and other home theater components.