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MagSafe is a series of proprietary magnetically attached power connectors, originally introduced by Apple Inc. on January 10, 2006, in conjunction with the MacBook Pro at the Macworld Expo in San Francisco, California. The connector is held in place magnetically so that if it is tugged — for example, by someone tripping over the cord — it will pull out of the socket without damaging the connector or the computer power socket, and without pulling the computer off the surface on which it is located. MagSafe works similarly to the magnetic power connectors that many deep fryers and Japanese countertop cooking appliances from the early 2000s have in order to avoid spilling their dangerously hot contents.〔(News for "Break Away" Power Cords on Electric Deep Fryers )〕〔(Prior art for Apple's Magsafe ) – Patents Stack Exchange〕 Apple owns ("Magnetic connector for electronic device", issued in 2007) and does not license the MagSafe connector or the patent. ==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 the top and bottom of the connector 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.〔(【引用サイトリンク】 publisher = Apple Inc )〕 Some Apple desktop displays include a MagSafe connector which allows charging of Apple laptops. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「MagSafe」の詳細全文を読む スポンサード リンク
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