i-tec C31DUALKVMDOCKPD User Manual page 21

Quick Start
Display variant 2
In Customized mode, click on the icon of your choice,
the resolution will be described below the screen
(here visually 3008x1692 = 4K@30Hz)
Closed display mode - Working on a connected external monitor when
the Mac monitor is tilted is only possible when the Mac is powered on
and the mouse and keyboard are connected. More information here:
https://support.apple.com/en-en/HT201834
Most of the problems with screen refresh on the connected monitor
after putting the Mac to sleep, after using the screensaver, after restart-
ing the Mac, after turning the Mac off/on can be solved by using the
On/Off switch or by disconnecting the dock USB cable from the Mac's
USB port and reconnecting it after about 10s. After that, please wait for all
peripherals to finish connecting.
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ENGLISH