If the driver is older (designed for Windows 7), Windows 10 or 11 might not run it correctly.
The audio signal travels through the same USB cable but requires separate operating system permissions. Go to Settings > Privacy & Security > Camera / Microphone and ensure that "Allow apps to access your microphone" is toggled On . Additionally, open Sound Settings and verify that "USB Audio Device" (the webcam) is selected as your default input device. Video is Blurry or Out of Focus quantum pc camera qhm 480 lm driver