Yamaha CD Recordable/Rewritable Drive CRW-F1 Owner's Manual page 29

Analog connection
Connect one end of the audio cable (the end with one connector) to the analog
audio output jack on the rear panel of the CRW-F1 drive. Be sure that the
connector is in the correct direction prior to connecting it.
There are two types of connectors at the other end of the audio cable. Select
the one that fits the sound card: Vertical connector (PH) and Horizontal
connector (MPC). Use only one of the two connectors, and leave the other
free. Check the direction of the connector prior to connecting it to the sound
card.
Analog audio output
jack
Left channel (L)
Ground (G)
Right channel (R)
Vertical connector (PH)
Note
Some sound cards have more than one audio input jack, including those which do
not support the specification of the CRW-F1 drive. If playback audio cannot be
heard from the speakers, refer to the instruction for the sound card.
Audio cable
Horizontal
connector
(MPC)
Sound card
Audio input
jack
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