An HDMI switch is a device that allows multiple HDMI sources, like gaming consoles, Blu-ray players, or streaming devices, to connect to a single HDMI input on a television or monitor. This is useful for users who have limited HDMI ports on their display and want to easily switch between different devices without constantly plugging and unplugging cables. Most HDMI switches come with a remote control or a button on the device itself, making it simple to select the desired source. They support high-definition video and audio, ensuring that users enjoy quality entertainment without sacrificing performance.