Lenovo ThinkPad USB 3.0 Pro Dock, User Manual, Page: 32 / 64

To use the DVI-I video output connector, connect the DVI cable of the external monitor to the DVI-I video
output connector on the pro dock.
You also can connect an external monitor with a VGA connector to the pro dock using a DVI-I to VGA
adapter. To use the DVI-I to VGA adapter, do the following:
1. Connect the DVI-I to VGA adapter to the DVI-I video output connector on the pro dock.
2. Tighten the two screws on the DVI-I to VGA adapter.
Figure 9. Using the DVI-I to VGA adapter
3. Connect the VGA connector of the external monitor to the DVI-I to VGA adapter using a VGA cable.
You can adjust video settings to customize the use of the pro dock. For more information, see “Working
with the pro dock utility” on page 30.
Note: For better performance, occasionally adjust the external monitor to realign its settings with the video
output of the pro dock. For more information about the adjustment procedure, refer to the documentation
that comes with your external monitor.
Working with the pro dock
This section provides information about the video output function of the pro dock and instructions on how to
work with the pro dock utility, which enables you to configure the pro dock to your needs.
Understanding the video output modes
The pro dock works in the following three video output modes:
• “Extend mode” on page 28
• “Mirror mode” on page 29
• “Single-display mode” on page 30
By default, the pro dock works in extend mode. The first time you connect the pro dock to your notebook
computer, the resolution of your notebook computer and the connected monitor will be changed to the
default. You can configure your resolution to your needs
Extend mode
When the pro dock is in extend mode, it splits your display across two monitors.
There are three options when you are using extend mode:
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User Guide