I had an unsuccessful experience trying to get HP Hardware to provide me with the pin-out configurations. I was transferred 5 times trying to get someone to help me. My laptop is less than 1 year old and still in warranty. Since I can't get any help there does anyone have the pin-out for their single port headphone jack? I'm trying to feed signal into a RF digital communications interface such as a Signalink or Rigblaster plus.