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The following diagram shows the relationship between the system-supplied Microsoft Windows Driver Model (WDM) audio components that support rendering and capturing MIDI content.
See the following for a description of the Microsoft Windows Driver Model (WDM) audio components:
Port Class Adapter Driver and PortCls System Driver
See the following for more information about the configuration of the port class adapter driver and the USBAudio driver:
Rendering and Capturing Audio Content by Using a Port Class Audio Adapter
Rendering and Capturing Audio Content by Using the USBAudio Driver