Lenovo ThinkPad E580 User Manual page 24

1 Caps Lock indicator
When this indicator is on, you can type uppercase letters by directly pressing the letter keys.
2 Fn Lock indicator
This indicator shows the status of Fn Lock function. For more information, see "Using the special keys" on
page 14.
3 Speaker-mute indicator
When this indicator is on, the speakers are muted.
4 Microphone-mute indicator
When this indicator is on, the microphones are muted.
5 Camera status indicator
When this indicator is on, the camera is in use.
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E580 and E585 User Guide