The MacBook Air has been updated over four times since the original release. The first revision introduced better performance, a bigger hard drive, and a Mini DisplayPort for peripheral monitors. The second update, introduced with the MacBook Pro series, featured a lower price, better performance, and a longer-lasting battery. It was revised a third time in October 2010 when the outside container was redesigned. At this time Apple began selling another model with a smaller, 11.6-inch (29 cm) screen until 2019. The fourth update was released in July 2011. There have been other revisions in between, but in October 2018, there was a fifth revision to the MacBook Air, with a fingerprint scanner, a larger Retina screen, and a backlit keyboard.
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