In a few words, ASIO4ALL uses sophisticated methods such as Kernel-Streaming to provide ASIO-specific drivers, therefore making your WDM-based audio devices both supported and manageable on older versions of Windows.
Since older versions of Windows struggle a bit when it comes to recognizing WDM audio devices, you can overcome this drawback with the help of ASIO4ALL.
The basic function of a WDM audio driver, also commonly known as a miniport driver, is to provide an interface for a basic audio adapter card usually found on a system bus.
