Apple iMac (21.5 and 27-inch, Late 2009) - Manual (Page 28)

28 Chapter 2 Life with Your iMac
Using the Apple Wireless Keyboard
Your wireless keyboard comes with two AA batteries installed and is paired with your
iMac. Pairing means your keyboard and iMac are connected wirelessly and can
communicate with each other.
About the Indicator Light
The LED on your wireless keyboard functions as a battery indicator and a status light.
When you first turn on your keyboard, the light glows steadily for 5 seconds, indicating
the batteries are good, and then turns off. If you push the On/off (®) button on your
wireless keyboard and the indicator light doesn’t illuminate, you may need to replace
the batteries. See “Replacing the Batteries” on page 47.
Pairing Your Wireless Keyboard with Your iMac
If your wireless keyboard isn’t paired with your iMac, the indicator light begins to blink,
indicating your keyboard is in discovery mode and ready to pair with your iMac.
On/off button Indicator light