Audio video cables are specialized connectors designed to transmit audio and video signals between devices, such as televisions, computers, and audio systems. Common types include HDMI (which carries both audio and video in a single cable), RCA (often used in older equipment for composite video and stereo audio), and optical cables (for digital audio). With advancements in technology, newer standards like DisplayPort and USB-C are also gaining popularity for their versatility and high-definition capabilities. Selecting the right cable is essential for optimal signal quality and device compatibility.