HP CD-Writer Plus Internal 9110i Drive - Manual (Page 13)

How to Connect an Audio Cable 13
Next, connect the other end of the audio cable to the sound board inside
your computer.
Tips for connecting the audio cable to the sound board
■ Identify the sound board.
To identify the sound board look for microphone connectors on the back
of your computer. The circuit board inside the computer attached to the
microphone connectors is the sound board.
■ Identify the audio connectors on the sound board.
Sound board
The large connector or the small
connectors may be the one that
works for your sound board. Use
only one connector.
CD-IN horizontal
connector
CD-IN vertical
connector
Audio
cable