Using the Drivers node, you import drivers into the ConfigMgr drivers catalog. The deployment process uses this catalog to identify which drivers to copy to a system essentially injecting them into the OS deployed. Drivers injected into the process are not guaranteed to be used however. Windows setup still makes the ultimate decision of which drivers to actually install and use; however, for drivers to be available to the built-in driver tasks, they must be imported into ConfigMgr. The “Driver Management Section” has a complete discussion of using drivers during OSD.
Categories are an optional classification tool used to track driver versions or separate and classify them in some other logical way that makes sense for ...