Question: what is the difference between magsafe 1 and 2?
Answer: This is a redesigned head that is more robust, but compatible with older MacBooks. All MacBooks Air, MacBook and MacBook Pro models since 2012 (apart from the recent 12-inch MacBook with Retina Display) use the newer MagSafe 2 connection. ... The MagSafe 1 adaptor is thicker, while MagSafe 2 is longer and thinner.