Learn which power adapter, cord, and plug comes with your Mac notebook computer.

Power adapters for Mac notebooks are available in 29W, 45W, 60W, 61W, 85W, and 87W varieties. You should use the appropriate wattage power adapter for your Mac notebook. You can use a compatible higher wattage adapter without issue, but it won’t make your computer charge faster or operate differently. Lower wattage adapters don’t provide enough power.
MagSafe power adapters have three pieces: Connector and adapter, AC cord, and the AC plug, or “duckhead.”
MacBook (Retina, 12-inch, Early 2015) and later comes with an Apple 29W USB-C Power Adapter with duckhead and a USB-C Charge Cable. MacBook Pro models introduced in late 2016 come with an Apple 61W or 87W USB-C Power Adapter with duckhead and a USB-C Charge Cable.
The images below show the style of adapter that comes with each MacBook, MacBook Pro, and MacBook Air. If you’re not sure which model Mac you have, use these articles:

USB-C
MagSafe 2
MagSafe
USB-C

Apple 29W USB-C Power Adapter and USB-C Charge Cable
MacBook (Retina, 12-inch, Early 2016)
MacBook (Retina, 12-inch, Early 2015)

Apple 61W USB-C Power Adapter and USB-C Charge Cable
MacBook Pro (13-inch, Late 2016, Four Thunderbolt 3 Ports)
MacBook Pro (13-inch, Late 2016, Two Thunderbolt 3 Ports)

Apple 87W USB-C Power Adapter and USB-C Charge Cable
MacBook Pro (15-inch, Late 2016)

Make sure you’re using the correct USB-C charge cable
You can verify that you’re using the correct version of the Apple USB-C Charge Cable with your Mac notebook and its USB-C AC Adapter.
The cable’s serial number is printed on its external housing, next to the words “Designed by Apple in California. Assembled in China.”

If the first three characters of the serial number are C4M or FL4, the cable is for use with the Apple 29W USB-C Power Adapter.
If the first three characters of the serial number are DLC or CTC, the cable is for use with the Apple 61W or 87W USB-C Power Adapter.
If the cable says “Designed by Apple in California. Assembled in China” but has no serial number, you might be eligible for a replacement USB-C charge cable.

MagSafe 2

85W MagSafe power adapter with MagSafe 2 style connector
MacBook Pro (Retina, 15 inch, Mid 2015)
MacBook Pro (Retina, 15-inch, Mid 2014)
MacBook Pro (Retina, 15-inch, Late 2013)
Macbook Pro (Retina, 15-inch, Early 2013)
MacBook Pro (Retina, Mid 2012)

60W MagSafe power adapter with MagSafe 2 style connector
MacBook Pro (Retina, 13-inch, Early 2015)
MacBook Pro (Retina, 13-inch, Mid 2014)
MacBook Pro (Retina, 13-inch, Late 2013)
MacBook Pro (Retina, 13-inch, Early 2013)
MacBook Pro (Retina, 13-inch, Late 2012)

45W MagSafe power adapter with MagSafe 2 style connector
MacBook Air (11-inch, Early 2015)
MacBook Air (13-inch, Early 2015)
MacBook Air (11-inch, Early 2014)
MacBook Air (13-inch, Early 2014)
MacBook Air (11-inch, Mid 2013)
MacBook Air (13-inch, Mid 2013)
MacBook Air (11-inch, Mid 2012)
MacBook Air (13-inch, Mid 2012)

About the MagSafe to MagSafe 2 Converter
If you have an older MagSafe adapter, you can use it with newer Mac computers that have MagSafe 2 ports using a MagSafe to MagSafe 2 Converter (shown).

MagSafe “L” and “T” shaped adapters

60W MagSafe power adapter with “T” style connector
MacBook Pro (13-inch, Mid 2009)
MacBook Pro (15-inch, 2.53GHz, Mid 2009)
MacBook (13-inch, Mid 2009)
MacBook (13-inch, Early 2009)
MacBook (13-inch, Aluminum, Late 2008)
MacBook (13-inch, Late 2008)
MacBook (13-inch, Early 2008)
MacBook (13-inch, Late 2007)
MacBook (13-inch, Mid 2007)
MacBook (13-inch, Late 2006)
MacBook (13-inch)

60W MagSafe power adapter with “L” style connector
MacBook Pro (13-inch, Mid 2012)
MacBook Pro (13-inch, Late 2011)
MacBook Pro (13-inch, Early 2011)
MacBook Pro (13-inch, Mid 2010)
MacBook (13-inch, Mid 2010)
MacBook (13-inch, Late 2009)

85W MagSafe power adapter with “T” style connector
MacBook Pro (15-inch Mid 2009)
MacBook Pro (17-inch Mid 2009)
MacBook Pro (17-inch Early 2009)
MacBook Pro (15-inch Late 2008)
MacBook Pro (17-inch Late 2008)
MacBook Pro (15-inch Early 2008)
MacBook Pro (17-inch Early 2008)
MacBook Pro (15-inch 2.4/2.2GHz)
MacBook Pro (17-inch 2.4GHz)
MacBook Pro (15-inch Core 2 Duo)
MacBook Pro (17-inch Core 2 Duo)
MacBook Pro (15-inch Glossy)
MacBook Pro (17-inch)
MacBook Pro

85W MagSafe power adapter with “L” style connector
MacBook Pro (15-inch, Mid 2012)
MacBook Pro (15-inch, Late 2011)
MacBook Pro (17-inch, Late 2011)
MacBook Pro (15-inch, Early 2011)
MacBook Pro (17-inch, Early 2011)
MacBook Pro (15-inch, Mid 2010)
MacBook Pro (17-inch, Mid 2010)

45W MagSafe power adapter with “L” style connector
MacBook Air (13-inch, Mid 2011)
MacBook Air (11-inch, Mid 2011)
MacBook Air (13-inch, Late 2010)
MacBook Air (11-inch, Late 2010)

MacBook Air (Mid 2009)*
MacBook Air (Late 2008)*
MacBook Air (Original)*
*Adapters that shipped with the MacBook Air (Original), MacBook Air (Late 2008), and MacBook Air (Mid 2009) are not recommended for use with MacBook Air (Late 2010) models. When possible, use your computer’s original adapter or a newer adapter.

Source: Apple