A cable used to send audio sound output to the computer's sound card. Which  plays audio drives to both analog and digital sound to both a headphones jack and external connector just like a CD player.It's connect the audio output from any 3.5mm male to two RCA male connectors source to the stereo input on your component stereo or amplified speaker system.These retractable cables It expands from 4" to 48",the perfect choice for connecting your MP3 Player, CD Player or Portable DVD player to the Aux Input Jack of TV or stereo.