Same layout, the mother board is this G4 quicksilver is the model with the built in printer port, where as the prior had the head phone jack in its place, otherwise it is the same. This is a different hard drive install as well since the first drive was dead.
I do not have the driver for this specific CD Rom which is probobly what is going wrong, and I do not know where to get a driver as I have looked around and found nothing, may be one of those have to re-install 9.2.2 again and let the installer choose the driver automatically. However this prospect scares me a bit as the rest of this machine has been running rock solid for months.