Wildman
Member
Does anybody have a clue about the pinout of the 4 pin power adapter on the powerbook 520 / 540 units? what scarce little info that did exist seems to have disappeared with imageshack going stupid. I have one here currently in the process of restoration, but can't justify getting an original psu if the logic board is shot. It appears that the two left side pins could be +16 volts but unsure..