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Mon, Feb 01, 2016 10:34 pm

Obtaining information for the AC adapter in use on a Mac laptop

The pmset command, which is used to manipulate power management settings, can be used on a Mac laptop running Apple's OS X operating system to obtain information regarding the alternating current (AC) adapter being used to power the laptop.

-g ac / adapter will display details about an attached AC power adapter. Only supported for MacBook and MacBook Pro.

E.g., the output below is from a MacBook Pro laptop with an Apple 85W MagSafe Power Adapter model number A1343 plugged into it.

$ pmset -g ac
 Wattage = 85W
 Revision = 0x0000
 AdapterID = 0x0100
 Family Code = 0x0085
 Serial Number = 0x00981dc6

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