HP 550 - 9 Connector Pin Assignments; Audio-Out (Headphone); Audio-In (Microphone)

9 Connector pin assignments
Audio-out (headphone)
Pin Signal
1 Audio out, left channel
2 Audio out, right channel
3 Ground
Audio-in (microphone)
Pin Signal
1 Audio signal in
2 Audio signal in
3 Ground
126 Chapter 9 Connector pin assignments