HP xw4400 Service And Technical Reference Manual page 170

Microphone connector (1/8 inch)
Headphone connector (1/8 inch)
Line-in audio connector (1/8 inch)
Line-out audio connector (1/8 inch)
160 Appendix C Appendix C — Connector pins
1
2
3
4
5
6
Pin Signal
1 (Tip) Audio
2 (Ring) Power
3 (Shield) Ground
Pin Signal
1 (Tip) Audio_Left
2 (Ring) Audio_Right
3 (Shield) Ground
Pin Signal
1 (Tip) Audio_In_Left
2 (Ring) Audio_In_Right
3 (Shield) Ground
Pin Signal
1 (Tip) Audio_Out_Left
2 (Ring) Audio_Out_Right
3 (Shield) Ground
power
gnd
tpb-
tpb+
tpa-
tpa+
ENWW