In this article we will help you determine the correct MacBook Air model numbers of any MacBook you may have. The very first MacBook Air was released on January 15, 2008, and it was a 13-inch model. Later on October 10 ,2010 an 11-inch model was released. This new model was offered at a lower price, less weight, longer battery life and better overall performance compared to the previous 12-inch model.
If you are not experienced with the different types of MacBook Airs out there, it could be very hard to identify the model by just looking at it. This is very important to be able to identify if you plan to sell your used MacBook Air at some point and need to specify its model. The fastest and easiest way to determine what model you have is by looking at the serial number that is located on every device’s surface.
You can also find this information in the About This Mac window in almost any version of the MacBook Air. Other ways to look up the model number is by looking at your original packaging if you still have it. Or if you purchased your MacBook Air straight from Apple or another authorized third party retailer, you can find the serial number on your receipt or invoice. Look at one of these places and then match which model number it goes with from the following list: