Yes...get a toslink (male) to a 3.5 mm (female) adapter. Easy as
pie.
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Toslink switch specifications can usually be found on product
descriptions on most websites that sell computer products. Sewell
Direct is an example of a site that sells Toslink switches and also
provides their specification.
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A Toslink IS a Fiber Optic Digital Interconnect cable
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A toslink cable has a round connector that provides digital
audio data using small pulses of light instead of electricity. It
is manufactured by Toshiba.