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If your hotkeys are working fine and you don't care about on-screen pop-ups, you can safely ignore this "Unknown Device". However, for a complete "clean" Device Manager, installing the OSD utility is necessary. Are you seeing this error on a Xiaomi laptop , or is this appearing on a different brand like HP or ASUS driver missing - Specific - Win-Raid Forum - Level1Techs

Navigate to the folder where you extracted the OSD utility files, ensure Include subfolders is checked, and click Verify Chipset & Power Management

// Check if ACPI\WSTADEF exists #include <setupapi.h> #include <devguid.h>

: Often associated with ID fragments like INT3400 . These drivers manage power consumption and heat to protect your hardware.