Acer Aspire 5540 Service Manual page 18

The power, battery and wireless communication status indicators are visible even when the LCD display is
closed.
Icon
Icon
Icon Function
12
Function Description
Function
Cap lock Lights when Cap Lock is activated
Description
Num lock Lights when Num Lock is activated.
HDD Indicates when the hard disc or optical
drive is active.
Bluetooth Indicates the status of Bluetooth
communication.
Wireless LAN Indicates the status of wireless LAN
communication.
Battery Lights up when the battery is being
charged.
Power Lights up when the computer is on.
Description
Chapter 1