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Mid 2010 Model A1278 / 2.4 or 2.66 GHz Core 2 Duo processor

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2 round plastic pieces blew out of the case?

After replacing my trackpad in my mid-2010 Macbook Pro, two 4-5mm round plastic pieces blew out when I was blowing dust out. I don't know where they came from. They aren't flat, but are cupped about 1mm, and they have 4 pinholes in the bottom in a square configuration. They look like caps, but I can't find where they fit.

As a side note, why does my case clearly show my Macbook Pro as a A1273, when everything I've read says that it should be A1278? A misprint?

Thank you in advance.

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Nevermind. I found another post elsewhere that gave me a hint. They attach to the bottom of the four rubber feet from the inside of the case. I had lost 3 feet and when they come off, those pieces end up loose in the case. Unfortunately I'm missing 1, but will just try and put the new feet on anyway.

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The 'A1273' is almost certainly an A1278 marking that's gotten scraped a little bit. Those markings are silkscreened on, and they don't stand up to much punishment.

If you look at your MagSafe power adapter, you'll see a marking that indicates the wattage; those disappear if you look at them crosseyed. When those power adapters get into the used market, it leads to people plugging their Macbook Pros into underpowered chargers that will power the computer, but not charge the battery. sigh...

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Monica Stout will be eternally grateful.
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