Micro Connectors, Inc. 3 feet TOSLINK Optical Digital Audio Cable (M06-826-3 ) This connection is also known as: optical audio cable; digital optical; fiber optic audio and S/PDIF It carries a digital audio signal from CD, DVD, Blu-ray, satellite box, cable box and computers to AV receivers for multi channel surround sound reproduction Fiber optic cable can faithfully send data without fear of traditional interferences that are typical in a copper-based medium