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Container IDs Generated from a Bus-Specific Unique ID

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The preferred way to generate a container ID for a device is based on a bus-specific unique ID. This is the most precise and reliable method for generating container IDs.

The Plug and Play (PnP) manager uses this method if the following are true:

  • The device contains a bus-specific unique ID.

  • The bus driver for the device recognizes this unique ID as present and well formatted.

  • The bus driver can reliably hash the unique ID into a globally unique identifier (GUID), and returns this GUID in response to the IRP_MN_QUERY_ID function code when the Parameters.QueryId.IdType member of the IO_STACK_LOCATION structure is set to BusQueryContainerID.

Windows 7 and later versions of Windows provide inbox drivers for several of the most common bus types. This includes USB, Bluetooth, and PnP-X. For these bus types, the device is only required to include a bus-specific unique ID. The supplied Windows bus driver will then read the unique ID from the device and create a container ID.

The following topics describe how the inbox bus drivers generate container IDs for certain bus types:

Container IDs for USB Devices

Container IDs for Bluetooth Devices

Container IDs for PnP-X Devices

Container IDs for 1394 Devices

Container IDs for eSATA Devices

Container IDs for PCI Express Devices