i-tec U3VGAHDMIADA Mode D'emploi page 12

USB 3.0 to HDMI and VGA Adapter
Mirror mode: This mode can only be used if supported by the Mac.
Click on Gather Windows: using this option you can choose the settings of
the corresponding monitor – Scaled (offers available resolutions), Rotation
(Standard, 90°, 180° and 270°) and Refresh rate (if offered). Below the
following setting options are displayed. This may vary, depending on your
monitor.
12 | ENGLISH