The 45W  MagSafe Power Adapter for MacBook  Air comes with a magnetic connector, which ensures that your power cord is immediately disconnected from the computer if it is subjected to heavy strain and is better protected from damage. In addition, the magnetic connector ensures a quick and secure connection to the system.
 An LED indicator on the top of the connector lights up when the connection is established. Orange means the device is charging. Green means it is fully charged. A power cord is included with the power supply unit for maximum cable length. The compact wall plug, which is also included, is perfect when traveling.
 The power adapter was specially designed for the MacBook  Air has been redesigned and is particularly practical for on the go. Thanks to the well thought-out design, you can simply wind up the cable and store it easily.
 This power supply unit charges the lithium-polymer battery when the system is switched on, switched off or in sleep mode. It also provides power to the device when you are not using it on batteries.
 Compatible with the MacBook only  Air with MagSafe power connection.
 Not sure if the power adapter fits your Mac?
 additional Information  for the right choice.
 You need to determine which Mac model you have exactly. If you're using OS X Lion (10.7) or later, click the "" button in the top left of the screen, then select "About This Mac" and click the "Learn More ..." button. Mac model and generation are displayed.