First generation (A1016) M9270LL/A (4 batteries) The first generation Apple Wireless Keyboard was released at the
Apple Expo on September 16, 2003. It was based on the updated wired
Apple Keyboard (codenamed A1048), and featured white plastic keys housed in a clear plastic shell. Unlike the wired keyboard, there are no USB ports to connect external devices. The bottom of the keyboard features space for four
AA batteries and has an on/off switch.
Second generation (A1255) MB167LL/A (3 batteries) On August 7, 2007, Apple released a redesigned model of the Apple Wireless Keyboard. Like the wired
Apple Keyboard, the new model is thinner than its predecessors and has an aluminum enclosure. Another addition was the new functions added to the
function keys, such as media controls and
Dashboard control. Unlike the previous version, the Wireless Keyboard now has a layout similar to the
MacBook. The power button has been relocated to the right side of the keyboard, and the layout does not include a numeric keypad. This model added accidental caps lock prevention: the key has to be held down for a moment for the caps lock to engage. This keyboard required only three AA batteries, one fewer than its predecessor.
Third generation (A1314) MC184LL/A (2 batteries) (bottom)|alt=German Apple wireless keyboards In October 2009, a slightly revised third model was released. New model number A1314 replaced the A1255, two years and two months after the initial release. The new model now uses only two
AA batteries instead of three originally. Additionally,
Mac OS X 10.5.8 is now the minimum OS over the original
Mac OS X 10.4.10. This model of keyboard became standard with new generation of
iMacs introduced on the same day. Unfortunately, a firmware update issued in early 2012 rendered the F1 through F9 keys and their associated brightness, Exposé, Dashboard, and media controls inoperable, as well as the right shift key. There is no known fix for this issue.
Fourth generation (A1314) MC184LL/B (chargeable/2 batteries) On July 20, 2011, following the release of
Mac OS X 10.7/OS X Lion, Apple updated the keyboard slightly, updating the label on the Exposé key to Mission Control and changing the Dashboard key to a Launchpad key. == Languages and layouts ==