HP EliteBook 8730w - Audio-In (Microphone); Audio-Out (Headphone); External Monitor

Audio-in (microphone)
Pin Signal
1 Audio signal in
2 Audio signal in
3 Ground
Audio-out (headphone)
Pin Signal
1 Audio out, left channel
2 Audio out, right channel
3 Ground
External monitor
Pin Signal
1 Red analog
2 Green analog
3 Blue analog
4 Not connected
5 Ground
6 Ground analog
136 Chapter 9 Connector pin assignments