What is rear panel optical jack?

A rear panel optical jack, often referred to as a TOSLINK or SPDIF jack, is an audio connection interface found on devices like televisions, sound systems, and computers. It uses fiber optic cables to transmit digital audio signals in a high-quality format, minimizing interference and signal degradation. This type of connection is commonly used to connect components such as DVD players to surround sound systems or soundbars, providing clear audio output.