Toslink to Mini Toslink

TOSLINK or Optical Cable is a standardized optical fiber connection system. Its most common use is in consumer audio equipment (via a "digital optical" socket) where it carries a digital audio stream between components such as HDTVs, set-top boxes and audio receivers.

Mini-TOSLINK jacks exist and are commonly found on Apple computers and portable MiniDisc players. These provide the same capabilities but are almost exactly the same size and shape as the 3.5 mm stereo minijack (headphone jack).