I recently fried an old hub by using the wrong power supply, so now I'm scared ;) (I think I just took a center negative instead of center positive supply, voltage was correct)
So now my question, is it safe to use the following power supply with the arduino duemilanove? Voltage is within the limits, amperage should be ok and it is center positive. But I'd like to get some confirmation :) I'm not allowed to post a link now, so please forgive me for double posting. See next post for image.