

MacBook Pro: Found on the back surface of the laptop.If you would like to see a visual representation – visit Apple’s website. The location of the numbers will differ between models post-2012, 2010-2011 and Original-2009 however on all MacBook Airs, the numbers will be at the back surface of the laptop. MacBook Air: Found on the back surface of the laptop.Be sure to switch off your iMac, disconnect the wires and then flip it over, preferably on a soft surface, to reveal the numbers.


