i-tec C31HDMIDPDOCKPD100 Mode D'emploi page 16

i-tec USB-C HDMI DP Display Dock with PD 100 W
Below the following setting options are displayed. This may vary,
depending on your monitor.
In Scaled mode click on the required icon, the resolution is displayed below
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ENGLISH
Display option 1
Display option 2
(which looks like this, 3008x1692 = 4K@30Hz)