An HDMI cable (High-Definition Multimedia Interface) is a type of cable used to transmit high-quality audio and video signals between devices. It connects various electronics, such as televisions, computers, and gaming consoles, allowing them to share content seamlessly. HDMI cables support high-definition resolutions and can carry both video and audio through a single cable, simplifying connections. These cables come in different types, including standard, mini, and micro HDMI, catering to various devices. They are widely used in home entertainment systems and professional setups, making them essential for anyone looking to enjoy high-quality media experiences.