One button on the logic board of a 1st generation iMac G5 (PPC) is an alternate power button. Does anyone know what the purpose of the other button is?
iMac, Mac OS X (10.5.8)
I am far from certain but I believe it is the power management unit (PMU) reset switch a/k/a Cuda switch: http://support.apple.com/kb/HT1939
Do not press it when the computer is on.
John, the alternate power button is also used to reset the SMU. I have already pressed the other button once but it doesn't seem to do anything, so I am still wondering.
Does anyone know what the second button is for on the logic board of an iMac G5 (PPC), 1st generation ?
