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Windows Driver Model

In computing WDM stands for Windows Driver Model. It provides a framework for device drivers[?] that operate under Microsoft Windows 98/Me/Xp/2k and Server2003. WDM drivers are layered in a complex heirarchy and communicate with each other via IO Request Packets IRPs.

WDM drivers usally support at least the follwing:

Power Management
Plug & Play
Windows Management Instrumentation

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