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USB Serial Number

This test verifies that the serial number on the device under test is unique. Some device classes must implement USB serial number (see More information for a list of device classes).

Test details

 

Associated requirements

Device.Connectivity.UsbDevices.Addressing
Device.Connectivity.UsbDevices.AlternateDriver
Device.Connectivity.UsbDevices.InternalDevicesMustSupportSuspend
Device.Connectivity.UsbDevices.MsOsContainerId
Device.Connectivity.UsbDevices.MustEnumerateOnEhciAndXhci
Device.Connectivity.UsbDevices.MustSupportSuspendOnRT
Device.Connectivity.UsbDevices.SerialNumbers
Device.Connectivity.UsbDevices.SerialNumbersUseValidCharacters

See the device hardware requirements.

Platforms

Windows 7 (x64)
Windows 7 (x86)
Windows RT (ARM-based)
Windows 8 (x64)
Windows 8 (x86)
Windows Server 2012 (x64)
Windows Server 2008 R2 (x64)
Windows RT 8.1
Windows 8.1 x64
Windows 8.1 x86
Windows Server 2012 R2

Expected run time

~2 minutes

Categories

Certification

Type

Automated

Running the test

Before you run the test, complete the test setup as described in the test requirements: USB Device.Connectivity Testing Prerequisites.

In addition, this test requires:

  • One test device if the serial-number feature is not supported

  • Two identical test devices with the same product ID (PID) and vendor ID (VID) numbers if the serial-number feature is supported

Before you run the test, you must attach the test device to the USB hub that is attached to the test computer.

ImportantImportant
If the test device goes into selective suspend quickly, you may need to disable the power management option for the USB hub in Device Manager.

Troubleshooting

For troubleshooting information, see Troubleshooting Device.Connectivity Testing.

If the serial number isn't required and is not implemented, this test automatically passes. To review test details, review the test log from Windows HCK Studio.

Note the following information about this test:

  • This test runs only if the test device supports a unique serial number.

  • The test validates the uniqueness of the serial number.

More information

The following device classes must implement USB serial numbers:

  • Bluetooth (Class Code 0xE0, SubClass 0x01, Protocol 0x01)

  • Communication (Class Code 0x02)

  • Mass storage (Class Code 0x08)

  • Scanning/imaging (Class Code 0x06)

  • Printing (Class Code 0x07)

  • Host wire adapters and device wire adapters (Class Code 0xE0, SubClass 0x02)

USB serial numbers are optional for all other device classes. However, if you implement the serial-number feature, all devices of the same model must have unique serial numbers.

If you implement the serial-number feature, the test setup requires two identical devices that have different serial numbers in order to pass the test.

Command syntax

 

Parameter Description

IsEmbeddedUSBDevice

String that indicates whether the device is an internal device.

TRUE: The device is an internal device

FALSE: The device is an external device. This is the default value.

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