Sony PCV-E302DS - Manual (Page 347)

See the manual that came with your i.LINK (IEEE-1394) equipped device for more information on setting it up
and using it.
Connecting an S/PDIF Equipped Digital Audio Device
Some models of the VAIO MicroTower include an S/PDIF (Sony/Phillips Digital Interface) Optical
Digital Audio Output connector. See
Read Me First for information on your specific model.
To connect an S/PDIF device
 Locate the S/PDIF (Optical Digital Audio Output) connector. Plug the S/PDIF device into this
connector.
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