Not a bad breakdown.
http://www.ifixit.com/Teardown/MacBook+Air+11-Inch+Mid+2013+Teardown/15078/1
I was looking to see if I could drop in the ac wifi card from a 2013 into a 2012 but it looks like it is all different
http://www.ifixit.com/Teardown/MacBook+Air+11-Inch+Mid+2013+Teardown/15078/1
I was looking to see if I could drop in the ac wifi card from a 2013 into a 2012 but it looks like it is all different