I have installed an AirPort Extreme card into a G4, and straight afterwards the CD drive and power button stop working. I take the card out, and the drive and button work again. I've gone round the loop several times, and the same thing keeps happening.
Has anyone else come across this? Why is it happening? How can it be avoided? Surely I should be able to fit an AirPort card into the G4 (467 MHz) without any conflicts arising.