Apple MagSafe power supply pinout - Apple/Mac Hardware https://www.tweaking4all.com/forum/applemac-hardware/apple-magsafe-power-supply-pinout/ Tweaking4All.com Discussion Board en-US Thu, 11 Jun 2026 23:24:50 +0000 wpForo 60 RE: Apple MagSafe power supply pinout https://www.tweaking4all.com/forum/applemac-hardware/apple-magsafe-power-supply-pinout/#post-611 Mon, 30 Dec 2013 16:43:14 +0000 See also MagSafe Wiki page ...

]]> Apple/Mac Hardware Hans https://www.tweaking4all.com/forum/applemac-hardware/apple-magsafe-power-supply-pinout/#post-611 Apple MagSafe power supply pinout https://www.tweaking4all.com/forum/applemac-hardware/apple-magsafe-power-supply-pinout/#post-122 Mon, 30 Dec 2013 16:42:24 +0000 For those wanting to dabble with a Apple MagSafe PowerSupply (common with the newer Apple laptops), here the pinout.

I was exploring the option to use it as a 5V power supply, but unfortunately it's giving us 16.5 V (when load is applied).
Without any load on it only 6.8 V is supplied. The connector is magnetic and can be flipped.

pin 1 : Ground (GND)
pin 2 : 16.5V DC
pin 3 : Charge control LED and adapter ON/OFF (when battery is charged)
pin 4 : 16.5V DC (= pin 2)
pin 5: Ground (GND = pin 1)

See also attached image.

]]> Apple/Mac Hardware Hans https://www.tweaking4all.com/forum/applemac-hardware/apple-magsafe-power-supply-pinout/#post-122