j5 create JUH450 USB 3.0 HDMI & 3-Port HUB - Manual (Page 27)

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FUNCTIONS: MAC
Display Resolution
Go to
, and then System
Preferences
From System Preferences click on the Display
tab. You should see the screen below.

On this screen, you can adjust the resolution,
display mode and color range.
Display Mode
Click on the Arrangement tab and
uncheck Mirror Displays to turn the
Mirror display option off. Another
window will automatically appear
on the screen that represents the
USB Display device.

You can move the menu bar
to any display to assign any
display to Primary.
If you cannot see the Display window to adjust your secondary monitor resolution,
click on the Gather Windows button.