Dell XPS 15 (L502X, Early 2011) - Manual (Page 45)

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Using Your XPS Laptop
1 Power button and light — Turns the computer on or off when pressed. The light on
the button indicates the power states. For more information on the power button light,
see “Status Lights and Indicators” on page 36.
2 Wireless status light — Turns on if wireless is enabled. For more information, see
“Enable or Disable Wireless (Optional)” on page 16.
3 Battery status light — Indicates the battery charge status. For more information on
the battery status light, see “Status Lights and Indicators” on page 36.
NOTE: The battery is charging when the computer is powered using the AC adapter.
4 Windows Mobility Center control — Touch to launch Windows Mobility Center.
5 Instant launch control — Touch to launch a predefined application of your choice.
6 Audio control-panel control — Touch to launch the Dell Audio control panel. The
control panel allows you to setup studio‑quality audio output on your computer. You can
also change the audio settings such as volume, external speaker setup, and microphone
setup.