: Question

Quicksilver G4
May 11th, 2008, 04:23 PM
I have a question, why is it that on my PowerBook I have a power adapter with the short plug that has 2 prongs and the extension has 3 prongs?

May 12th, 2008, 09:57 AM
AFAIK, the third prong is for grounding purposes. As for why the non-extension plug has no third prong, it probably does not require it for grounding purposes.