Acer TravelMate 4280 - Manual (Page 45)

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Indicators
The computer has eight easy-to-read status indicators, including five on the
front panel.
The power, battery and wireless communication status indicators are visible
even when the LCD display is closed.
1. Charging: The light shows amber when the battery is charging.
2. Fully charged: The light shows green when in AC mode.
Icon Function Description
Caps Lock Lights up when Caps Lock is activated.
Num Lock Lights up when Num Lock is activated.
HDD Indicates when the hard disk drive is active.
Bluetooth Indicates the status of Bluetooth communication.
3G Indicates the status of 3G communication
(for selected models).
Wireless LAN Indicates the status of wireless LAN communication.
Power Indicates the computer's power status.
Battery Indicates the computer's batttery status.