I acquired a Power Mac G5 today. It's the mid-2004 model DP 1.8. I got it for the case, but it's complete and it boots. The problem is that the USB ports appear not to work. I have pulled the PRAM battery and found that it tests fine (3.75v). This is where I have stopped troubleshooting for the night. In the morning, I will reinstall the PRAM battery and reset the PMU. Is there anything else I can try?