
Here’s something that doesn’t get much attention. 140W power adapter that comes with Apple’s new ones 16-inch MacBook Pro has a subtle design change. As a result, some accessories are no longer compatible. But not everyone has a new design.
The new duck head design is a major change
Some early buyers of Apple’s new M5 Pro and M5 Max 16-inch MacBook Pro are reporting a change in the design of the power adapter’s duck head.
A teardown ChargerLab in March shows the change, and numerous posts from online customers note the problem.
thers have an original design – adding to the mystery behind the change.
Apple power adapters with detachable AC wall adapters or duck heads traditionally use the C7 connector, which is shaped like a pair of glasses.
The 140W power adapter that comes with Apple’s new 16-inch MacBook Pro has a different connection. This is a more symmetrical shape.

Customers report accessory incompatibility
New form for two accessories it seems break compatibility.
First, Apple’s $19 Power Adapter Extension Cable doesn’t work. It uses the duck-head shape that all other Apple power adapters with modular plugs have.
Apple used to include them in the box before removing them from the first Touch Bar MacBook Pro a decade ago.

Customers note also that Apple World Travel Adapter Kit this will not work with the new form. Apple no longer sells the World Travel Adapter Kit on its website, but its one supporting document product details.
it is not clear whether or not 140W USB-C Power Adapter He has yet to switch to this new model, which Apple sells for $99. Apple still lists compatibility with the Power Adapter Extension Cable.
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