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This section assumes you are using the Windows 10 operating system. Right-click on a blank space on the
desktop. In the menu that appears, select "Display settings" to go to the Display interface. In the "Multiple
displays" section, you can configure multiple displays. The drop-down menu provides four options: copy this
display, expand this display, only display on 1, and only display on 2.
HDMI audio output
Notes:
• If your graphics card comes with an HDMI connector, it supports devices with HDMI audio output.
• Before setup, connect the HDMI display that supports audio output.
This section assumes you are using the Windows 10 operating system. Go to "Control Panel" → "Hardware
and Sound" → "Sound" to open the Sound interface. In the "Playback" tab, right-click the HDMI device to
test it and set up HDMI device audio output.
Other precautions
• The BIOS of this graphics card is designed and produced exclusively for Lenovo computers. Do not use a
graphics card BIOS not obtained from Lenovo to refresh or upgrade the existing BIOS. Otherwise, the
graphics card may not work properly, causing you a lot of unnecessary hassle.
• Before adjusting the display mode, read the instructions for the display device to confirm that it can
support the new refresh rate and resolution. If you cannot confirm that your display supports the desired
display mode, you can consult the technical support department of Lenovo.
• In a DOS environment, this graphics card does not support simultaneous output to two display devices.
• In expanded display mode, if you use certain playback software to play DVDs, the video will only be
output on the main display. Therefore, to avoid inconvenience, adjust the primary/secondary attributes of
the displays before playing a DVD.
• The settings interface of the multi-display output function may differ slightly with different driver versions
and operating systems.
• After you install the graphics card driver and restart the computer, an ASP.NET Machine A... user may
appear. This does not affect system use, and you can delete the user manually.
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ThinkCentre M740t / M747t / M940t User Manual V1.0 (E-version)
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