An HDMI switch is a device that allows you to connect multiple HDMI sources, such as gaming consoles, Blu-ray players, and streaming devices, to a single HDMI input on your TV or display. It enables you to easily switch between different HDMI sources without constantly unplugging and reconnecting cables, providing convenience and flexibility in managing multiple devices with limited HDMI ports.

When selecting an HDMI switch, consider factors such as the number of HDMI inputs and outputs, HDMI version compatibility (e.g., HDMI 2.0 for 4K resolution), maximum supported resolution and refresh rate, audio support (e.g., Dolby Atmos, DTS:X), and additional features like remote control, auto-switching, and picture-in-picture functionality. Evaluate your specific requirements and preferences to help you choose the switch that best suits your needs.