What kind of adaptor is used to connect S/PDIF-Out in GT gaming notebook Series?

What kind of adaptor is used to connect S/PDIF-Out in GT gaming notebook Series?
MSI GT Series Notebooks normally support to Toslink (optical) output, but if gamers want to use to connect S/PDIF-Out? How to do it?
Well, you could have 2 options, first way is using a 3.5mm type Toslink cable and output digital signal to multiple channel amplifier.
Second way, gamers could use a RCA S/PDIF cable with a Digital Audio Adapters to convert Toslink optical to RCA coaxial cables or RCA to Toslink.