Ok, I got another one - now with picture! ;) It is labeled DDU-4- 7992 The picture can be seen here: http://pics.pofo.de/gallery/v/S8000/S8000_boards/P1070269.JPG.html Wild guessing.... resistornetwork? capacitornetwork (was something like that around?)? Greetings, Oliver -- Oliver Lehmann http://www.pofo.de/ http://wishlist.ans-netz.de/