Dell UltraSharp 49 U4924DW 49" WQHD Ultrawide Curved Monitor - Manual (Page 80)

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Operating the monitor
You can see the following message before the DDC/CI function is disabled:
When you adjust the Brightness level for the first time, the following message
appears:
NOTE: If you select Yes, the message will not appear the next time you
change the Brightness setting.
When you change the default setting of power saving features for the first time,
such as
Uniformity Compensation , USB-C Charging 90W , Other USB
Charging , or Fast Wakeup , the following message appears: