Wonfering why the Magsafe connector in my hand wouldn't fit the receptacle in the MacBook Pro. Because the 2011 MBP uses the old narrow thicker MagSafe port. I was trying to fit the wider thin plug for the 2014 MacBook Air. Have to get a MagSafe 1 to 2 adaptor & stick it onto the old charger cable near the end so it can do both Macs.