![]() ![]() Inheriting the container ID of the parent devnodeįor a flowchart that outlines the details of the assignment process, see Generating a container ID by hashing certain device information Reading the device’s container ID(s) from the Microsoft OS The Microsoft-provided USB driver stack obtains the container ID by: ![]() For a composite device (print/scan/ fax machine), the container ID is the same for all the functional devnodes because they belong to the same physical device. The ID is unique to a physical device no other device has that same ID. Generally, the bus driver obtains the ID from the device. Is an identification string, which is supplied to Windows by the USB bus driver. A natural follow-up question is, as a device developer, When should I supply a container ID and how should I supply that ID so that Windows enumerates the device correctly? This post answers those questions. How to Generate a Container ID for a USB Device Hi, I’m Kristina Hotz, a Program Manager on the USB team. ![]()
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