A Y-cable or Y cable is a self describing name of a type of cable containing three ends of which one is a common end that in turn leads to a split into the remaining two ends. When looked upon, a Y-cable can resemble the Latin letter "Y". Y-cables are typically, but not necessarily, short (less than 12 inches), and often the ends connect to other cables.
Uses may be as simple as splitting one audio or video channel into two, to more complex uses such as splicing signals from a high density computer connector to its appropriate peripheral . Y-shaped mains leads are also becoming popular in some countries, enabling 2 appliances to run from one mains plug.[1] One of the most commonly used types of Y-cables are for audio, one end is a 3.5mm (1/8″) stereo male jack, and the other end are two left and right audio channel RCA (phono) male jacks to connect sound card outputs to external speakers, or to the analog audio inputs of televisions.