Apple offers a extensive variety of USB - coulomb chargers that correspond to the many models of MacBook , MacBook Air , and MacBook Pro it ’s made that rest uncommitted or that it offers replacements for . You might think because these are so specific , like a 29W or 140W charger , that you must apply precisely that electric power adapter for a given machine .
Fortunately , that ’s not the case . While reliable before the widespread borrowing of the USB - C plug case by Apple and everybody else , USB - C pee-pee it even easier as there ’s only a single variety of jack you could plug into any port . Power direction is a fundamental part of USB broadly ; USB - C improved on it by countenance for magnate to flow either focal point on a cable ( and by adopt the most advanced part of theUSB trade grouping ’s top executive delivery stipulation ) .
unlike host devices ( like iPhones and MacBooks ) and adapters have specific compounding of power they can tender . But in all cases , any USB - C transcriber can provide power to any boniface gimmick with a USB - C port . You ca n’t go wrong : no adapter will supply more power than a host can accept .
For instance , if you plug away a 10W adapter into a MacBook Pro that can shoot down up to 140W , it only passes power at 10W. Likewise , a 140W adapter wo n’t blow up a maximal 29W indictable machine ! In many cases , you could use a comparatively grim - electric power adapter with a laptop and keep the bombardment from depleting or charge it slightly . You need to match full electric power to full electric power or higher to ensure a machine charges altogether , even while in exercise .
We have recommendations for thebest USB - snow charger for your MacBook Pro or Airand theBest USB - C charging line for iPhone , iPad and Mac .
This Mac 911 article is in answer to a question submitted by Macworld proofreader Buddy .
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