Accell K172B-002B User Manual page 8

Set Display to Extended Mode
1. Click on the DisplayLink icon.
2. Select Extend.
This device is now extended in the direction it was the last time
the display was in this mode. For more control, use the Extend To
submenu and select one of the options. This puts the device into
extend mode, and places it to the Left/Right/Above/Below the main
(primary) monitor.
Set Display to Mirror Mode
1. Click on the DisplayLink icon.
2. Select Mirror.
The resolution, color depth and refresh rate of the primary screens
are replicated on the monitor connected to the docking station.
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