The new 2018 MacBook Pro has a silicone membrane under each key

In an apparent effort to improve reliability, Apple has put a little dust cover over the butterfly switches on its new MacBook Pro keyboards.

ifixit mbp keyboard
iFixit

Leave it to the teardown experts at iFixit to figure out what Apple is doing to address reliability issues with its “butterfly” MacBook keyboards.

The site has begun tearing down the new MacBook Pros—the ones with eighth-generation Intel Core processors—and it’s discovered something interesting under the keycaps. Covering the butterfly mechanism is a very thin, flexible silicone membrane. 

As iFixit notes, this exactly matches a recent Apple patent for “ingress prevention for keyboards.”

apple ingress patent US Patent Office

Apple’s got a patent for keyboard ingress prevention that matches what iFixit found.

That’s where the story gets interesting. Apple has told journalists that the new third-generation butterfly keyboard was not engineered specifically to address reliability issues: instead, they only intended to make them quieter. While the percentage of failing MacBook butterfly keyboards may be relatively small, the situation is at least bad enough that Apple has had to implement a free service program.

But iFixit can find no other major changes to the keyboard that would make it quieter. If it was only engineered to be less clicky-clacky, Apple could probably employ better methods than this. And if the reliability issues are primarily caused by tiny bits of dust getting wedged under the butterfly mechanism, implementing its patented solution for “ingress prevention” seems like the logical way to go.

In other words, Apple is probably trying to downplay any reliability problems with its keyboards, and is using the fact that its new more reliable keyboards also happen to be quieter as a convenient marketing point. After all, saying it’s “more reliable” implies that there’s a reliability problem to be fixed in the first place.

If you’re hoping that the keyboard service program may replace your earlier model MacBook Pro keyboard with the new silicone-membrane-equipped third generation, you’re probably out of luck. MacRumors has confirmed that the new keyboards are exclusive to the 2018 MacBook Pros, and your earlier model won’t be upgraded to the new keyboard if you bring it in for repair.

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