Using Your VAIO Computer
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You can check the keyboard's battery power level by clicking 
(wireless keyboard icon) on the taskbar. A warning message may also appear on the screen when the keyboard's battery power becomes low.
If the wireless keyboard does not operate properly, the batteries may need to be replaced. If the wireless keyboard is not being used for an extended period of time, remove the batteries to avoid possible damage from battery leakage.
If you want to put the keyboard in a more 'ergonomical' position, open the keyboard feet.