THIS ADAPTER CAUSED MY LAPTOP TO SHORT CIRCUIT AND CATCH FIRE!
Just because an adapter is listed to be compatible with your laptop DOES NOT MEAN IT IS! I'm not an expert and cannot properly explain it, but a technologically capable friend of mine told me that the voltage of this adapter wasn't the same as my old adapter, and the difference caused my computer to short circuit and go up in smoke. And because this happened with a replacement adapter and not the original given to me by HP, my warranty doesn't mean a damn thing. So please check to make sure the voltage is the same, I'd hate for someone to go through what I just went through!
GO WITH THE SURE THING! I really wish I would have spent the money on one approved by HP! I TRIED TO SAVE FORTY BUCKS AND NOW I HAVE TO COME UP WITH 700 FOR A NEW COMPUTER! I AM SO FULL OF RAGE.