dude.. you're way too deep into the subject so I honestly don't think you may get your answer here unless an actual technitian from HP may be able to get that info him/herself for you..
the best I can probably suggest is this.
1. I would probably give tech support a call to have them provide some suggestions (you may have to pay for the info)
2. check with the manufactorer of the motherboard (I don't know if it's hp/compaq or another company that supply that info... now is possible that the info may be propiatery so may not be avaliable to the public
3. try this website http://www.supplyframe.com/datasheet-pdf/search/DC%2520POWER%2520JACK%2520HP%2520COMPAQ
if needed this is the service manual for your laptop.. but I could not see anything as specific/detailed as your question.. but here it is if you need it..
sorry I was not much help.. if you find the source of your info once you found it.. post back and share your source if possible.