MacBook Air: Key placement and functionality
Summary
The keyboard introduced with the MacBook Air computers includes several new features. One of the most noticeable changes is that it includes additional media keys and newly-labeled keys for Exposé and Dashboard.
Products Affected
MacBook Air (Original), MacBook Air (Late 2008)

- F1 - Reduce Display Brightness
- F2 - Increase Display Brightness
- F3 - Exposé
- F4 - Dashboard
- F5 - Reduce Keyboard Brightness
- F6 - Increase Keyboard Brightness
- F7 - Previous track
- F8 - Play/Pause
- F9 - Next track
- F10 - Mute
- F11 - Volume down
- F12 - Volume up
Changes from previous keyboard layouts:
- Dashboard is now accessible from the F4 key.
- The Exposé key is now F3 and has expanded functions:
- Pressing the Exposé key - Exposé (all windows)
- Pressing Ctrl+Exposé key - Exposé (application windows)
- Pressing Command+Exposé key - Exposé (desktop)
- The Command key is now labeled "command."
- The Numlock key has been removed.
- The Eject key is now directly over the delete key.
- To toggle between Extended Desktop and Video Mirroring when using an external display, press Command and F1.
- To detect displays, press Command and F2.