So you want to switch between multiple HDMI, VGA, and DP inputs on a monitor? The StarTech HDVGADP2HD Multi-Input to HDMI Converter has you covered. It lets you connect multiple video sources and supports up to 4K @ 30hz resolution. It is backward compatible to 1080p.
This gadget lets you switch between DisplayPort, VGA or two HDMI source devices on one display. It offers automatic priority switching. This will ship in August.