You can plug the adapter in one way, and then flip it upside-down and reverse the polarity and the adapter works just fine. On the adapter there are two blades and both are small (hot) sized, meaning there is no set polarity orientation on the adapter. If the 3rd slot is on the bottom, then that's left/large/neutral and right/small/hot. Newer outlets have polarized two-slots with the smaller slot being hot, and the larger slot being neutral. (Or get a USB C cable if you don’t need the extra speed/convenience.I love the Apple adapters! There are so many cool things about them, like how the heads can be replaced and how swappable the components are.Īs you look at it, the right blade is hot, the left blade is neutral, and the bottom prong is ground. The good news is unlike the old MacBook MagSafe chargers, you can simply swap out the cable if it breaks or wears out. A $30 premium for the MagSafe connector is a bit steep. There aren’t any other $140W GaN chargers on the market, though so you really can’t compare but Apple’s straight USB C charging cable is only $20. $100 and $50 for the charger/cable seems a bit pricey. I assume there was a limitation with the TB4 controller? Theoretically it seems like they should be able to handle more power. Well, there’s an answer to the people complaining about the MagSafe port - the USB C ports have a lower power capacity.

That price excludes the $49 USB-C to MagSafe cable. The new 140W charger is being sold as a separate purchase to the MacBook Pros, at $99.

For the 16-inch model, you can recharge using either MagSafe 3 or Thunderbolt 4, but you won't reach the 140W fast charging capability of the new charger unless you use the MagSafe port and Apple's charger - for now.

Mac charger apple