MacBook Air

The MacBook Air family is a line of ultraportable Macintosh notebook computers from Apple Inc.

1st generation
The first-generation MacBook Air was a 13.3"-only model, introduced at the Macworld Conference & Expo as the "World's Thinnest Notebook" on January 15, 2008. It featured a custom Intel Merom CPU and Intel GMA graphics. In late 2008, the CPU was updated to a faster, non-custom Penryn CPU and integrated Nvidia GeForce graphics while the hard drive capacity was increased and the Micro-DVI video port was replaced by the Mini DisplayPort. A mid-2009 refresh, introduced alongside the MacBook Pro family, featured a slightly higher-capacity battery, and a faster Penryn CPU.

2nd generation
On October 20, 2010, Apple released a redesigned 13.3" model, with improved enclosure, screen resolution, battery, and flash storage instead of a hard drive. In addition, a new 11.6" model was introduced, offering reduced cost, weight, battery life, and performance relative to the 13.3" model, but better performance than typical netbooks of the time.

On July 20, 2011, Apple released an updated model in the same form factor as the prior model. The new model was powered by new dual-core Intel Core i5 and i7 processors, had a backlit keyboard, Thunderbolt instead of Mini DisplayPort and Bluetooth was upgraded to v4.0. Maximum flash storage and memory options were almost identical.

3rd generation
In 2019, Apple introduced the 3rd generation MacBook Air, which incorporated a Retina display and USB-C, superseding the Retina MacBook. In 2020, it was updated again with Apple's new Magic Keyboard.

4th generation
Announced on November 10, 2020, the 4th generation MacBook Air incorporated Apple's own Apple M1 processor.