There were two different designs for MagSafe 1... the design used on the 2008 Macbook and 2008 unibody Macbook Pro had a plastic rectangular end that jutted str

There were two different designs for MagSafe 1... the design used on the 2008 Macbook and 2008 unibody Macbook Pro had a plastic rectangular end that jutted straight out. The design used on the early Macbook Air is like you describe, with a right angle and an aluminum body. Both designs work with the Magsafe 1 to Magsafe 2 adapter.