Using In Mac Os - i-tec U3VGAHDMIADA Gebrauchsanweisung

Quick Start
USING IN MAC OS X
After connecting the monitor, the screen on your Mac will glimmer, which is
a standard condition, after stabilization it is possible to perform standard
setting of the monitor here: System Preferences-Displays:
Click on Arrangement and in the default mode (Extended desktop) click on the
new monitor and drag it as necessary vis-à-vis the Mac monitor. If you select
Mirror displays the mode will change to Mirror (the resolution of the monitors
will be automatically adjusted according to their parameters and the highest
possible resolution will be set on both monitors). By cancelling the Mirror
displays option you will return to the Extended desktop mode.
ENGLISH | 9