LG UltraFine 24MD4KL Service Manual page 14

[CIC Guide] How to adjust the Audio Output and Brightness
Purpose
How to adjust the Audio Output and Brightness
Contents and Guidance
[Guidance]
1. Symptom : can't adjust the Audio Output and Brightness in Monitor OSD.
2. CIC Guidance
1) Check PC Spec: MacBook or Windows PC
2) Customer Guide : Please guide the method according to PC as below..
Mac
Apple Logo -> System Preferences
Windows
Applied model
Brightness
Display  adjust Brightness in the Monitor
* PC Brightness can be adjusted with PC setting
impossible.
24MD4KL/27MD5KL
Audio output
Sound  Select LG UltraFine
Display Audio and can adjust
Output Volume in bottom side
Select the Speaker Icon in Windows Tray,
and then select LG UltraFine Display Audio
for adjusting the Volume
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Only training and service purposes.
24MD4KL/27MD5KL