The following table shows what the LED status indicators are for and what the different colors or blinking of the lights mean.
| 1 |
Numeric lock
|
The numeric keypad on the keyboard is enabled. To enable or disable the keypad, press and hold the Shift key or Fn key, and press the NmLk (ScrLk) key. |
| 2 |
Caps lock
|
Caps Lock mode is enabled. You can enter all alphabetic characters (A-Z) in uppercase without pressing the Shift key. To enable or disable Caps Lock mode, press the Shift key, and press the Caps Lock key. |
| 3 |
Drive in use |
A hard disk drive or an optional drive, such as a drive in the Ultrabay™ device, is being used to read or write data. When this indicator is on, do not put the computer into sleep (standby) mode, remove the device from the drive, or turn off the computer. |
| 4 |
Power on |
The computer is on and ready to use. This indicator stays lit whenever the computer is on and is not lit when the computer is in sleep (standby) mode. |
Note: Another mode whose status you may want to know is Scroll Lock mode. When this mode is enabled, the arrow keys can be used as function keys for screen-scrolling, but not for moving the cursor. To enable or disable this mode, press the ScrLk key. Not all application programs support this function.
| 1 |
Sleep (standby in Windows® XP)
|
Green: The computer is in sleep (standby) mode.
Blinking green: The computer is entering sleep (standby) or hibernation mode, or is resuming normal operation. |
| 2 |
AC power
|
Green: The ac adapter is connected and the computer is operating on ac power. If a battery is installed in the computer, it is charged when this indicator is green.
Off: The computer is operating on battery power. |
| 3 |
Battery status |
Green: The battery has more than 20% charge.
Orange: The battery has between 5% and 20% charge.
Fast blinking orange: The battery has less than 5% charge.
Note: The battery may be charging.
Slow blinking orange: The battery is being charged. When it reaches 20%, the blinking color changes to green.
Slow blinking green: The battery has between 20% and 80% charge, and charging is continuing. When the battery reaches 80% charge, blinking stops, but the charging may continue until the battery is 100% charged.
Note: If the computer is operating on battery power, the Battery status indicator does not work while the computer is turned off or it is in sleep (standby) mode or hibernation mode.
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| 4 |
Wireless WAN |
Green: The wireless WAN feature is on, and the radio link is ready for use.
Blinking green: Data is being transmitted. |
| 5 |
Bluetooth |
Green: The Bluetooth feature is on, and the radio link is ready for use.
Blinking green: Data is being transmitted. |
| 6 |
Wireless LAN |
Green: The wireless feature (the IEEE 802.11 standard) is on, and the radio link is ready for use.
Blinking green: Data is being transmitted. |
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