Dell U2422H 23.8" 16:9 IPS Monitor - Manual (Page 81)

Operating the Monitor
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2. Ensure that the USB ports and the video inputs are paired accordingly.
NOTE: For USB-C 90W connection, there is no further setting
required.
Setting the Maximum Resolution
NOTE: The steps may vary slightly depending on the version of
Windows you have.
To set the maximum resolution for the monitor:
In Windows 7, Windows 8, and Windows 8.1:
1. For Windows 8 and Windows 8.1 only, select the Desktop tile to switch to
classic desktop.
2. Right-click on the desktop and click Screen Resolution .
3. If you have more than one monitor connected, ensure that you select
U2422H/U2422HX/U2422HE .
4. Click the Screen Resolution dropdown list and select 1920 x 1080 .
5. Click OK .
In Windows 10 and Windows 11:
1. Right-click on the desktop and click Display settings .
2. If you have more than one monitor connected, ensure to select U2422H/
U2422HX/U2422HE .
3. Click the Display Resolution dropdown list and select 1920 x 1080 .
4. Click Keep changes .