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Lenovo ThinkPad USB 3.0 Dock User Manual page 22

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2. You cannot play back videos on your external monitor(s) but can play them back on your
notebook computer monitor.
Some notebook computers do not support the Certified Output Protection Protocol (COPP), and you will
not be able to play back the protected videos on the external monitors connected to the dock. The Corel
WinDVD 10 program also has limitations on playing back videos in the Windows XP operating system.
To play back videos on the external monitor(s), you can connect the external monitor(s) to the VGA
connector(s) on your notebook computer, and extend the display to the external monitor(s). For more
information about configuring the display settings, see "Working with the dock utility" on page 13.
3. You cannot drag an application window to the other monitor(s) in the Windows XP or Windows
Vista operating system.
In the Windows XP or Windows Vista operating system, you cannot drag a maximized window unless
you reduce the window to a smaller size.
To drag a window from one monitor to the other(s), do the following:
a. On the window that you want to drag, click the Restore Down button or double-click the title bar to
make the window exit from its maximized status.
b. Drag the title bar of the window to the monitor that you want the window to be displayed.
4. The images on the external monitor(s) flutter.
To solve the problem, check the following:
• Ensure that the external monitor(s) are well connected to the video output connectors of the dock.
• Check the display resolution setting of the notebook computer and ensure that the resolution is
supported by the dock.
• Check that you do not select Optimize for Video in the Windows Vista or Windows 7 operating
system. If you select it, you might see double image in full screen mode when you right-click the
screen to open the setting menus.
5. The images on the external monitor(s) are not in correct colors.
To solve the problem, do the following:
a. Ensure that the external monitor(s) are well connected to the video output connectors of the dock.
b. Check the display resolution setting of the computer and ensure that the resolution is supported by
the dock.
6. Your computer can play back Web flashes. However, when you drag the window to the external
monitor(s) and maximize the playback window, the playback stops.
To solve the problem, update your Adobe Flash Player to the latest version.
Audio
You cannot hear anything through your notebook computer speakers or you cannot use the audio
connectors on the notebook computer.
By default, ThinkPad and other Lenovo
on the dock and disable built-in audio connectors when the dock is connected.
18
User Guide
®
notebook computers use the headset and microphone combo jack

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