Mag Safe - Features

Features

MagSafe has connector pins that are designed so the rectangular connector can be inserted in either orientation (however, the L-shaped version of the connector can only be fitted in one orientation without blocking neighboring ports, such as USB). LEDs on both sides show green if the computer battery is fully charged and amber or red if the battery is charging. MagSafe can be found on the MacBook, MacBook Pro and MacBook Air notebook computers, as well as the Apple LED Cinema Display.

The MacBook and the 13-inch MacBook Pro use a 60 W MagSafe charger, whereas the 15- and 17-inch MacBook Pro use an 85 W MagSafe charger. The MacBook Air has a lower-powered 45 W version of the MagSafe adapter. The power brick is smaller, but the MagSafe connector is the same as on the 60 W and 85 W chargers. Apple has made it clear that an adapter with the same or higher wattage than originally provided may be used without problems.

Apple also offers a "MagSafe Airline Adapter" for use on certain compatible airplanes. It has a DC input (instead of AC like the original MagSafe chargers) and will power the computer, but will not charge the battery.

On June 11, 2012, a thinner "MagSafe 2" connector was announced at Apple's 2012 Worldwide Developers Conference. It was manufactured in order to fit the (slimmer-than-previous) new MacBook Pro 15-inch with Retina display, as well as the updated line of MacBook Air. It also has a new connector shape based on the original one.

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