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Just like in the mid-2010 MacBook Air, the SSD is not soldered to the logic board. Thankfully this means you can upgrade the SSD for more storage, but you're still out of luck if you need extra RAM.
Seeing as how the RAM is not user-serviceable, it might be worth it to buy the nicer model from the get-go (all models except the base 11" come with 4GB).
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