I really feel that the posts are put without exactly referring to info the poster has with him and the discussion prolongs borad and wide. for example the Op , an year back referred to a Modem. had it, he also had the data about the psu poweringit. he could well do it.
even PXjain just says Dlink 502-T but he doesn't talk about the spec of the supply that came with the modem except that "it says 9V AC". the handbook clearly mentions. I fear these discussions lead us no where .