HP ProBook 6450b

Audio-out (headphone)
Pin Signal
1 Audio out, left channel
2 Audio out, right channel
3Ground
External monitor
Pin Signal
1 Red analog
2 Green analog
3 Blue analog
4Not connected
5Ground
6 Ground analog
7 Ground analog
8 Ground analog
9 +5 VDC
10 Ground
11 Monitor detect
12 DDC 2B data
13 Horizontal sync
14 Vertical sync
15 DDC 2B clock
194 Chapter 8 Connector pin assignments