If you are not able to find the Realtek HD audio manager in Control Panel, you can find it in File Explorer. Go to C:\Program Files\Realtek\Audio\HDA. Double-click on RtkNGUI64.exe.

To see which device you plugged into on your Windows 11 PC, you may go to Sound Settings, Device Manager, or Control Panel. Right-click the speaker icon in the system tray and select Sound settings .