Dell UltraSharp U2424H User Manual page 86

DDC/CI DDC/CI (Display Data Channel/Command Interface)
allows your monitor parameters (brightness, color
balance, and etc.) to be adjustable using the software
on your computer. You can disable this feature by
selecting Off. Enable this feature for best user
experience and optimum performance of your
monitor.
LCD Helps reduce minor cases of image retention.
Conditioning Depending on the degree of image retention, the
program may take some time to run. You can enable
this feature by selecting On.
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86 Operating the monitor