I am trying to hook up my friend's laptop to his late model HDTV . I was surprised to find that it has no HDMI port , or there would be no prob . But it just has the composite 3 plugs . No prob to find this hdmi to composite cable . on Amazon , but now I see they have hdmi to tv adaptors as well . Cant I just use the cable ? Or is an adaptor needed ? Don't want to fry anything ! Any help greatly thanked !