j5 create JUA350 - USB 3.0 HDMI Display Adapter - Manual (Page 37)

USB DISPLAY ADAPTER
USER MANUAL
36
Mirror mode-Duplicate
This feature allows the same contents of the on-board screen to be displayed to the
screen of the USB 3.0 Display Adapter
You can select “Duplicate these displays” and click “Apply”
Note:
The resolution for the secondary and primary displays must be the same when using
Mirror Mode (This may be lower than the preferred resolution for the display). Only 2
displays can be mirrored at the same time. Windows 7 OS may have other limitations.