AV cable, also known as audio-visual cable, is a cable used to connect audio-visual devices such as televisions, DVD players, gaming consoles, and speakers. The cable transfers audio and video signals between the devices, allowing you to enjoy your favorite content on a big screen. AV cables come in different types, including composite, component, HDMI, and more, and choosing the right one will depend on the devices you want to connect and the quality of the signal you want to receive.