Ruigu Electronic

Operating systems prior to Windows 10, such as Windows 8.1, Windows 8, Windows 7, Windows Vista, and Windows XP, only support UAC 1.0. Furthermore, not all versions of Windows 10 support UAC 2.0.

Windows 10 began supporting UAC 2.0 starting with version 1703. Therefore, versions of Windows 10 prior to 1703 only support UAC 1.0.

In Windows 10 systems supporting UAC 2.0, the driver is named usbaudio2.sys, with the associated INF file being usbaudio2.inf.

The driver will be identified in Device Manager as a “USB Audio Class 2 device.” This name may be overridden by the USB product string (if available).

When a UAC-compatible device supporting UAC 2.0 is connected to the operating system, the system automatically uses the usbaudio2.sys class driver to manage it. However, if a third-party driver exists on the system, the system will use that third-party driver instead.

usbaudio2.sys is designed for the broader Windows USB Audio Architecture. Its architecture is as follows: