Now that I've tried in vain for half an hour to remove paper debris from the unit, I have just disposed of, even though it hardly came into use. In the manual is max. 5 sheets at a time - is not practical; I always brought only single sheets and nevertheless caused a paper jam, I can not undo (despite dismantling).
Besides, it makes a hell of a noise (but that would be to get over if it would work properly - was so cheap). My recommendation to all interested parties who - like me - think, "I need so rarely, can be cheap like" Do not buy!