Function | Action key or hotkey |
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| Press and hold f2 to decrease the screen brightness level incrementally. |
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| Press and hold f3 to increase the screen brightness level incrementally. |
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| Press f4 to switch the screen image among display devices connected to the computer. For example, |
| if a monitor is connected to the computer, pressing this key alternates the screen image from the |
| computer display to the monitor display to simultaneous display on both the computer and the monitor. |
| Most external monitors receive video information from the computer using the external VGA video |
| standard. The f4 key can also alternate images among other devices that are receiving video |
| information from the computer. |
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| Press f5 to play the previous track of a CD or the previous section of a DVD or a BD |
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| Press f6 to play, pause, or resume a track of an audio CD or a section of a DVD or a BD. |
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| Press f7 to stop the audio playback of a CD, a DVD, or a BD. |
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| Press f8 to play the next track of an audio CD or the next section of a DVD or BD. |
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| Press and hold f9 to decrease speaker volume incrementally. |
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| Press and hold f10 to increase speaker volume incrementally. |
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| Press f11 to mute or restore speaker sound. |
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| Press f12 to turn the wireless feature on or off. |
| NOTE: This key does not establish a wireless connection. To establish a wireless connection, a |
| wireless network must also be set up. |
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Refer to (2) through (6) in Keys on page 8 for information on using the application
20 Chapter 4 Keyboard and pointing devices