The optical output and input in the rear panel of the audio equipment on black color. A hand inserts the plug of the optical cable into the connector s/pdif of the stereo equipment. Closeup

Definition of S/PDIF cable

Optical Audio Cable 6ft, Syncwire Digital Toslink Cable for Soundbar Male to Male Nylon Braided 24K Gold Plated SPDIF Optic Cord for TV, Home Theater

CERRXIAN Toslink Optical SPDIF to 3.5mm AUX Audio Adapter Cable 6 Ft, 24bit / 192KHz SPDIF Digital Fiber Optic to Analog Converter with USB - 6FT Power NOT AUX to Optical

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