you don't need those part which implement ext subwoofer jack detection using another node pin sense
only need the part which implement headset mic jack using hp pin sense for the headset which must be the first hp pins when your alienware have headset and headphone
you don't need those part which implement ext subwoofer jack detection using another node pin sense
only need the part which implement headset mic jack using hp pin sense for the headset which must be the first hp pins when your alienware have headset and headphone