HDMI switches—also known as HDMI switchers or HDMI switching boxes—are hubs for your home theater's audio/video connection needs: These simple devices accept input from multiple HDMI sources and send the signal you choose to your HDTV through one HDMI cable.
What is the purpose of HDMI switch?
A HDMI Switch provides the ability to connect multiple source devices to a single HDMI input. Each source device is connected to a numbered input on the switch.
Do I need an HDMI switcher?
Why do I need a HDMI Switch? HDMI switches are useful for people that have multiple HDMI video source devices (examples of common HDMI sources: Blu-ray players, DVRs, Streaming boxes, etc.) and want to switch between them one at a time on their TV.
How does an HDMI switch work on a TV?
An HDMI switch allows you to route two or more HDMI source channels into a single channel. An HDMI switch is a simple way to expand the number of inputs a device (usually a television) can accept. Your TV is set to the only input source and, you use the HDMI switch to replace your TV's input selector.