This is a Microsoft-owned subkey whose values are overridden by those in the parent key.
This subkey contains default values that are used to describe device-specific settings such as the VID and PID. Each subkey represents a different IAD and OEMs can modify the values for those subkeys. Each IAD allows multiple interfaces to be grouped into a single function. This subkey defines Interface Association Descriptors (IADs). This subkey contains additional subkeys that describe an interface that has one or more alternate settings. More information about the supported values for each subkey is provided in sections below. USBFN registry keyĬonfiguration information for the USB device are under: This topic describes settings for the preceding key and subkeys that define the device, configuration, and interface descriptors for the device. HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\USBFN
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Registry keys related to the device-side USB drivers are under: OEMs that create and include their own interfaces must set additional registry values in order for their interfaces to be loaded and used. These values specify device and configuration descriptors for the USB device-side drivers in Windows. OEMs must set several registry values to make sure that their device enumerates with the correct metadata when connected to a computer. Registry keys that must be set by OEMs to define USB descriptors.