An HDMI port (High-Definition Multimedia Interface) is used to transmit high-quality audio and video from one device to another.In simple terms: It allows you to connect devices like a laptop, game console, or DVD player to a TV or monitor so you can watch or hear content in high definition.Example:You use an HDMI cable to connect your laptop to a TV screen to watch movies or do presentations.It carries both video and sound in just one cable — no need for separate audio wires.So in short, HDMI port = clearer video + better sound + easy connection.