My eight-year-old MacBook Air has been a constant companion, and I would feel lost without it. Of late, however, it has started to feel its age by running slow, and its 64GB of storage is just about filled.

There’s hope for my old friend, though. By swapping out its solid-state drive (SSD) storage module, I hope to not only get much more space for pictures, videos, stories, and the flotsam and jetsam of my digital life, but also give the machine a mild performance boost.
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https://www.laptopmag.com/articles/how-to-upgrade-ssd-macbook-air