I have a similar problem, well actually it's the opposite. I have two computer fans (12V, 180mA) and the AC/DC converter I have is 12V, 1000mA. If I hook this up will it ruin anything? I want to hook up both fans to the same power supply. I also have a converter that is 5V, 2000mA. Is it safe/ better to use either one? Thanks alot.