Mac Os X - StarTech.com IPUSB2HDMI Instruction Manual

Mac OS X

To configure the display settings and monitor positions, bring up the
Displays Preferences from the System Preferences menu:
The Display settings for each display will appear on the individual
monitors themselves. To configure them all from a single location,
press the "Gather Windows" button and each screen's Displays
Preferences windows will appear on that display.
All supported video resolutions will appear in the list on the left side.
To change the positioning of each display, click on the "Arrangement"
button (found only on the primary display) and you can then virtually
reposition each display.
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