Apple MagSafe 2 Power Adapter

Apple MagSafe 2 Power Adapters are power supplies introduced in 2012 by Apple for use with MacBook Air and Pro models with MagSafe 2 ports. The adapters are available in various wattages, to support different power requirements of devices.Apple announces MagSafe 2 power port, goes back to T-connector style (update) by Dante D'Orazio, The Verge. 2012-06-11.
==Description==
The MagSafe 2 Power Adapter features a thinner and wider magnetic connector than previous MagSafe devices to accommodate thinner designs. Like previous chargers, it features extendable cord holders, and the magnetic connector can safely disengage to reduce the risk of damage when the cord is accidentally tripped over. The T-shaped connector has been updated to reduce fraying of the power cord with use.
When the magnetic connector is securely attached, the delivery of a current is indicated by a small LED light at the head of the connector. The LED light will appear in an amber color to indicate that the device is charging, while a green color will indicate that the battery has been fully charged. The electrical transformer is enclosed in a white polycarbonate block with a removable "duckhead" connector that can be swapped for a Power Adapter Extension Cable or another connector from a World Travel Adapter Kit. It can continue to supply power to a device in which the battery is depleted or missing, though this may lead to CPU to prevent spontaneous shutdowns caused by the device drawing more current than available.MacBook and MacBook Pro: Mac reduces processor speed when battery is removed while operating from an A/C adaptor, Apple Inc. Archived 2008-09-13.
===Supported Macs===
MagSafe 2 Power Adapters are interchangeable as long as the adapter can supply the minimum wattage required by the device. Attaching a low-wattage adapter to a high-wattage device can electrically overload the adapter, causing it to fail or for throttling to be activated. 
*MacBook Air (2012 to 2017) — requires 45W or greater
*MacBook Pro with 13" Retina display (2012 to 2015) — requires 60W or greater
*MacBook Pro with 15" Retina display (2012 to 2015) — requires at least 85W
Older MagSafe Power Adapters can be used with newer devices with MagSafe 2 ports by using a MagSafe to MagSafe 2 Converter.Find the right power adapter and cable for your Mac notebook, Apple Inc. 2020-05-01.
==Product history==
MagSafe 2 was introduced with the MacBook Air and MacBook Pro with Retina Display on June 11 at the 2012 Worldwide Developers Conference. Older MagSafe Power Adapters can still be attached to the thinner and wider MagSafe 2 ports by using a MagSafe to MagSafe 2 Converter.Find the right power adapter and cable for your Mac notebook, Apple Inc. 2020-05-01.One of Apple’s Best Ideas Ever — Made Worse by David Pogue, The New York Times. 2012-07-30. Archived 2012-08-01.
==References==
==External links==
*Apple 45W MagSafe 2 Power Adapter at Apple
**Apple 60W MagSafe 2 Power Adapter
**Apple 85W MagSafe 2 Power Adapter
Category:Apple adapters
Category:2012 introductions