Macbook air 13″ 1.6 ghz early 2008 mb003ll/a – a1237. 1.8 ghz early 2008 mb003ll/a – a1237. 1.6 ghz late 2008 mb543ll/a – a1304. 1.86 ghz late 2008 mb940ll/a – a1304. 1.86 ghz mid 2009 mc233ll/a – a1304.
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