Yamaha CD Recordable/Rewritable Drive CRW3200 Owner's Manual page 28

Digital connection
Digital connection enables you to enjoy higher quality audio with less
distortion since the digital signals recorded on the audio CD are output to
the sound card with high fidelity.
Connect the digital audio output jack of the CRW3200E drive and the
SPDIF (digital audio) input jack of the sound card with a digital audio
cable. Be sure that the connector is in the correct direction prior to
connecting it.
Digital audio
output jack
Ground (G)
Signal (D)
Digital audio cable (optional)
Note
A digital audio cable with a proper connector and a sound card with an SPDIF
(digital audio) input jack are required.
Sound card
SPDIF
20