With an HDMI switch, you can connect multiple devices to a single HDMI input. That way, you can save HDMI ports on your television or projector, for example. This comes in handy when your device doesn't have a lot of connectors. When choosing an HDMI switch, it's important to consider the devices you want to connect. For example, do you want to connect a TV receiver to your TV? In that case, an HDMI switch that supports Full HD resolution will do. Do you want to connect a console or Blu-Ray player via a switch? Choose an HDMI switch with Ultra HD support. That way, the games or movies you play on the screen will look detailed and sharp.