I have a Acer Es 15 notebook. can u please tell me which kind of headphone will work on it? the headphones that has both mic and speaker on it. i tried the mobile headphone but it works as a speaker not as a mic too. so please refer me the headphone which supports both mic and speaker. i had the combo mic/headphone jack and then tried the normal headphones with two ports still didnt work. I even tried Muffs XT bluetooth headphones. Even that solely purpose only as speaker but the mic does not works. please help me i want its mic to work badly.