Acer Aspire series User Manual page 20

Before using your cordless keyboard for the first time, make
sure that the batteries are correctly installed. With the
computer turned on and the Windows operating system
running, move the keyboard within range (not more than 2
meters/6 feet) of the computer. Windows should detect the
radio signal and begin using the keyboard. If Windows fails
to detect the keyboard, pls follow below steps:
step 1: If you bought Aspire G600P, press the connect
button on the front of the computer; If you bought
Aspire M500P, press the connect button on the receiver.
step 2: Press the connect button on the keyboard.
Note: When your cordless keyboard is running out of
batteries, a pop-up window will remind you to
recharge it.
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