Is the “MagSafe” power connector that ships, or shipped, with MacBook Air models also compatible with the MacBook and MacBook Pro?
No. The “MagSafe” power connector that has shipped with each MacBook Air model only provides 45-watts of power, and as such, cannot power a MacBook or MacBook Pro model, which all require more power. Additionally, the “MagSafe” power connector for the original, “Late 2008” and “Mid-2009” MacBook Air models is rotated 90-degrees to save space. A “regular” MacBook “MagSafe” power connector will provide power to these earlier MacBook Air models, but it won’t fit when the MacBook Air sits on a flat surface. On the other hand, a regular MacBook “MagSafe” power connector can provide power to the “Late 2010” MacBook Air models.