Hello. I have a Powermac g4. Its the blue and silver one. The power supply went out in it. I have a friend that works at a pc shop, he tested it out and it is bad. I have been trying to find one for about a month now, having trouble identifying the one I need. I have found no power supply that has the same numbers on it. I know this should not be this hard. If anyone can point me in the right direction so I dont end up ordering the wrong power supply. I need to know how to identify the one I have and where to get a new one. I would really appreciate the help.