HDMI ports, or High-Definition Multimedia Interface ports, are connectors used to transmit high-quality audio and video signals between devices. Commonly found on devices like televisions, computers, and gaming consoles, HDMI ports allow for a single cable connection, simplifying the setup of home entertainment systems. These ports support various resolutions, including 4K and 1080p, and can carry multi-channel audio, making them ideal for modern media consumption. HDMI cables are widely available and come in different types, such as Standard, Mini, and Micro, catering to various devices and needs.