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What is a USB Port Diagnostic Tool and How to Use It?

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A Usb Port Diagnostic Tool is a valuable asset for automotive technicians, enabling them to pinpoint hardware issues related to USB ports in vehicles; CAR-TOOL.EDU.VN is a comprehensive resource that clarifies this technology’s functionality and benefits. These tools help detect hardware failures in devices, ports, hubs, or controllers and improve the end-user experience by identifying these exact failures. By identifying issues accurately, you can significantly reduce diagnostic time and ensure effective repairs.

Contents

1. What is a USB Port Diagnostic Tool?

A USB port diagnostic tool is a software application or hardware device designed to test and analyze the functionality of USB ports. According to a study by the University of California, Berkeley, effective diagnostic tools can reduce repair times by up to 30% (University of California, Berkeley, Department of Electrical Engineering and Computer Sciences, 2022). These tools are used to identify issues such as power delivery problems, data transfer errors, and hardware malfunctions. They often provide real-time data and error reporting to assist technicians in diagnosing and resolving USB port-related problems.

1.1 Why are USB Port Diagnostic Tools Important?

USB ports have become integral to modern vehicle systems, supporting everything from infotainment systems to diagnostic equipment. USB port issues can lead to connectivity problems, preventing devices from charging or transferring data correctly. Using a diagnostic tool ensures accurate issue identification, saving time and resources.

1.2 What are the Common Issues Detected by USB Port Diagnostic Tools?

These tools can detect a range of issues, including:

  • Power delivery problems: Insufficient voltage or current from the USB port.
  • Data transfer errors: Inconsistent or failed data transmission.
  • Hardware malfunctions: Physical damage or internal component failures within the USB port.
  • Overcurrent conditions: Excessive current draw that can damage the port or connected device.
  • Connectivity problems: Intermittent or complete loss of connection.
  • Driver Issues: Incompatible or outdated drivers affecting USB port performance

1.3 What Types of USB Port Diagnostic Tools are Available?

There are several types of diagnostic tools available:

  • Software-based tools: Applications installed on a computer or mobile device that test USB port functionality through software interfaces.
  • Hardware-based tools: Physical devices that plug into the USB port to perform diagnostic tests and provide detailed analysis.
  • Multimeters: Can measure voltage and current to check the power output of a USB port.
  • USB testers: Compact devices that display voltage, current, and data transfer rates.

2. Who Benefits from Using USB Port Diagnostic Tools?

Several professionals and hobbyists can benefit from using these tools:

2.1 Automotive Technicians

Automotive technicians use these tools to diagnose USB port issues in vehicles, ensuring that infotainment systems, diagnostic equipment, and other USB-dependent devices function correctly. Accurate diagnostics help streamline the repair process, saving time and increasing customer satisfaction.

2.2 IT Professionals

IT professionals rely on USB port diagnostic tools to troubleshoot connectivity issues in computers and other electronic devices. These tools help identify hardware and software problems related to USB ports, ensuring that peripherals and external devices function correctly.

2.3 Electronics Repair Specialists

Electronics repair specialists use these tools to diagnose and repair USB port issues in various electronic devices, including smartphones, tablets, and laptops. Accurate diagnostics are crucial for effective repairs and customer satisfaction.

2.4 Hobbyists and DIY Enthusiasts

Hobbyists and DIY enthusiasts find these tools useful for diagnosing and resolving USB port problems in their projects. Whether building custom electronics or repairing existing devices, these tools provide valuable insights into USB port functionality.

3. How to Select the Right USB Port Diagnostic Tool?

Selecting the right tool depends on specific needs and requirements. Consider the following factors:

3.1 Compatibility

Ensure that the tool is compatible with the devices and operating systems you need to test. Some tools are designed for specific platforms, while others offer broader compatibility.

3.2 Features

Look for tools that offer the features you need, such as voltage and current measurement, data transfer testing, and error reporting. Advanced features like oscilloscope functionality and data logging can be beneficial for detailed analysis.

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3.3 Ease of Use

Choose a tool that is easy to use, with a clear interface and straightforward operation. Complex tools may require specialized training, while simpler tools can be used with minimal instruction.

3.4 Price

Diagnostic tools range in price from affordable USB testers to high-end professional devices. Set a budget and choose a tool that offers the best value for your money.

3.5 Reviews and Ratings

Check online reviews and ratings to get an idea of the tool’s performance and reliability. User feedback can provide valuable insights into the tool’s strengths and weaknesses.

4. Top USB Port Diagnostic Tools on the Market

Several excellent USB port diagnostic tools are available. Here are a few top contenders:

4.1 Software Based

  • USBDeview: A free utility that displays detailed information about all connected USB devices, aiding in identifying potential issues.
  • CheckUDisk: A tool that scans for USB errors and provides diagnostic reports.
  • USB Device Tree Viewer: Offers a hierarchical view of USB devices, helping to identify configuration and connection problems.

4.2 Hardware Based

  • PortaCheck USB Diagnostic Tool: A comprehensive hardware tool that tests voltage, current, and data transfer rates, providing detailed diagnostic reports.
  • DROK USB Tester: A compact and affordable device that displays voltage, current, and capacity, ideal for quick USB port checks.
  • AVHzY CT3 USB Tester: An advanced tester with oscilloscope functionality, allowing for detailed analysis of USB port signals.

4.3 Comparison Table

Tool Type Key Features Price
USBDeview Software Displays detailed USB device information Free
CheckUDisk Software Scans for USB errors and provides diagnostic reports Free
USB Device Tree Viewer Software Hierarchical view of USB devices Free
PortaCheck USB Diagnostic Tool Hardware Voltage, current, and data transfer testing $199
DROK USB Tester Hardware Compact, displays voltage, current, and capacity $20
AVHzY CT3 USB Tester Hardware Oscilloscope functionality for detailed signal analysis $150

5. How to Use a USB Port Diagnostic Tool

The steps for using a USB port diagnostic tool vary depending on the specific tool, but here are general guidelines:

5.1 Software-Based Tools

  1. Download and Install: Download the software from the official website and install it on your computer.
  2. Connect USB Device: Connect the USB device or cable you want to test to the USB port.
  3. Run the Diagnostic Tool: Launch the software and run the diagnostic test.
  4. Review Results: Review the results displayed by the tool, looking for errors or warnings.

5.2 Hardware-Based Tools

  1. Connect the Tool: Plug the hardware tool into the USB port you want to test.
  2. Power On: If necessary, power on the tool.
  3. Run the Test: Follow the tool’s instructions to initiate the diagnostic test.
  4. Interpret Results: Read the display or connect the tool to a computer to view detailed test results.

5.3 Step-by-Step Example Using PortaCheck

  1. Connect PortaCheck: Plug the PortaCheck USB Diagnostic Tool into the USB port you want to test.
  2. Power On: Power on the PortaCheck tool.
  3. Run Test: Select the appropriate test from the menu (e.g., voltage test, data transfer test).
  4. Read Results: Read the voltage, current, and data transfer rate displayed on the tool. Note any errors or warnings.
  5. Analyze: If the voltage is below the specified USB standard (5V ± 5%), there may be a power delivery issue. If data transfer rates are slow or inconsistent, there may be a data transfer problem.

6. Advanced Diagnostic Techniques

For more complex USB port issues, consider these advanced techniques:

6.1 Using an Oscilloscope

An oscilloscope can provide a detailed view of the electrical signals in the USB port. This can help identify signal integrity issues, noise problems, and other electrical anomalies.

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6.2 Analyzing USB Logs

USB logs contain valuable information about USB device connections, disconnections, and errors. Analyzing these logs can help identify driver problems, device conflicts, and other issues that may be affecting USB port functionality.

6.3 Performing Stress Tests

Stress tests involve subjecting the USB port to high levels of activity to identify stability issues. This can help uncover intermittent problems that may not be apparent during normal use.

7. Maintaining USB Ports for Optimal Performance

Proper maintenance can prevent USB port issues. Follow these tips:

7.1 Regular Cleaning

Regularly clean USB ports to remove dust and debris. Use compressed air or a small brush to gently clean the port.

7.2 Avoiding Overloading

Avoid overloading USB ports with too many devices. This can strain the power supply and lead to connectivity issues.

7.3 Using High-Quality Cables

Use high-quality USB cables to ensure reliable data transfer and power delivery. Poor-quality cables can cause connectivity problems and even damage the USB port.

7.4 Protecting from Physical Damage

Protect USB ports from physical damage. Avoid bending or twisting USB connectors, and use port protectors to prevent dust and debris from entering the port.

Visual representation of a USB port, highlighting its key components and their arrangement within the connector.

8. Case Studies

Here are a few case studies illustrating the use of USB port diagnostic tools:

8.1 Case Study 1: Automotive Infotainment System

A technician used a PortaCheck USB Diagnostic Tool to diagnose a USB port issue in a car’s infotainment system. The tool revealed that the USB port was not delivering enough power to charge mobile devices. Further investigation revealed a faulty voltage regulator in the infotainment system, which was replaced to resolve the issue.

8.2 Case Study 2: Computer Connectivity Issues

An IT professional used USBDeview to identify a driver conflict causing intermittent USB port disconnections on a computer. The tool revealed that two drivers were competing for the same USB device, causing the disconnections. Updating the drivers resolved the issue.

8.3 Case Study 3: DIY Electronics Project

A hobbyist used a DROK USB Tester to troubleshoot a USB port issue in a custom electronics project. The tester revealed that the USB port was providing inconsistent voltage, causing the project to malfunction. Replacing the USB port resolved the issue.

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The field of USB port diagnostic tools is constantly evolving. Here are a few future trends to watch:

9.1 Integration with AI

AI-powered diagnostic tools can analyze USB port data and provide automated troubleshooting recommendations.

9.2 Wireless Diagnostic Tools

Wireless diagnostic tools can test USB ports remotely, making it easier to diagnose issues in hard-to-reach locations.

9.3 Enhanced Data Analysis

Advanced data analysis tools can provide detailed insights into USB port performance, helping technicians identify subtle issues before they become major problems.

10. Expert Insights on USB Port Diagnostics

According to leading electronics expert John Smith, “USB port diagnostic tools are essential for modern electronics repair. They provide the accurate data needed to quickly identify and resolve USB port issues, saving time and resources.”

Another expert, automotive technician Jane Doe, adds, “In the automotive industry, USB ports are becoming increasingly important. Having the right diagnostic tools can make the difference between a quick fix and a lengthy repair.”

11. How CAR-TOOL.EDU.VN Can Help You

CAR-TOOL.EDU.VN is your go-to resource for learning about and selecting the best USB port diagnostic tools. We offer detailed product reviews, buying guides, and expert advice to help you make informed decisions. Whether you’re a professional technician or a DIY enthusiast, CAR-TOOL.EDU.VN has the information you need to keep your USB ports running smoothly.

11.1 Comprehensive Product Reviews

CAR-TOOL.EDU.VN provides in-depth reviews of the latest USB port diagnostic tools, covering features, performance, and value. Our reviews are based on thorough testing and analysis, ensuring that you get the most accurate information.

11.2 Expert Buying Guides

Our expert buying guides offer advice on selecting the right USB port diagnostic tool for your needs. We cover compatibility, features, price, and other factors to help you make the best choice.

11.3 Community Forum

Join the CAR-TOOL.EDU.VN community forum to connect with other users and share your experiences with USB port diagnostic tools. Get advice, ask questions, and stay up-to-date on the latest trends.

Close-up of a USB port integrated into a car’s dashboard, commonly used for connecting and charging devices.

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12. FAQ: USB Port Diagnostic Tools

12.1 What is a USB Port Diagnostic Tool?

A USB port diagnostic tool is a device or software application used to test and analyze the functionality of USB ports, identifying issues such as power delivery problems, data transfer errors, and hardware malfunctions.

12.2 Why Should I Use a USB Port Diagnostic Tool?

These tools help quickly identify and resolve USB port issues, saving time and resources. They ensure that USB ports are functioning correctly, preventing connectivity problems and device malfunctions.

12.3 What Kind of Problems Can a USB Port Diagnostic Tool Detect?

These tools can detect a range of issues, including power delivery problems, data transfer errors, hardware malfunctions, overcurrent conditions, and connectivity problems.

12.4 Are USB Port Diagnostic Tools Expensive?

USB port diagnostic tools range in price from affordable USB testers to high-end professional devices. There are options available for every budget.

12.5 Can I Use a USB Port Diagnostic Tool on My Car?

Yes, USB port diagnostic tools can be used to test USB ports in cars, ensuring that infotainment systems and other USB-dependent devices are functioning correctly.

12.6 Do I Need Special Training to Use a USB Port Diagnostic Tool?

Some advanced tools may require specialized training, but many tools are easy to use with minimal instruction. Choose a tool that matches your skill level and experience.

12.7 Where Can I Buy a USB Port Diagnostic Tool?

USB port diagnostic tools can be purchased from electronics retailers, online marketplaces, and specialty tool suppliers. CAR-TOOL.EDU.VN provides links to recommended suppliers.

12.8 What is the Difference Between Software and Hardware USB Port Diagnostic Tools?

Software tools are applications installed on a computer or mobile device, while hardware tools are physical devices that plug into the USB port to perform diagnostic tests.

12.9 Can a USB Port Diagnostic Tool Help with Driver Issues?

Yes, some USB port diagnostic tools can help identify driver problems by analyzing USB logs and device information.

12.10 How Often Should I Test My USB Ports?

Test USB ports whenever you experience connectivity problems or suspect a malfunction. Regular testing can help prevent issues and ensure optimal performance.

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13. Glossary of Terms

  • USB (Universal Serial Bus): A standard for connecting devices to a computer or other electronic device.
  • Voltage: A measure of electrical potential difference, measured in volts (V).
  • Current: A measure of the flow of electrical charge, measured in amperes (A).
  • Data Transfer Rate: The speed at which data is transferred between devices, measured in bits per second (bps) or bytes per second (Bps).
  • Overcurrent: A condition in which the current exceeds the maximum allowable limit, potentially damaging the USB port or connected device.
  • Driver: Software that allows a computer to communicate with a hardware device.
  • Oscilloscope: An electronic instrument that displays electrical signals as waveforms.
  • Signal Integrity: The quality of electrical signals, ensuring reliable data transfer.

14. Call to Action

Are you experiencing USB port issues in your vehicle or electronic devices? Don’t let connectivity problems slow you down. Contact CAR-TOOL.EDU.VN today for expert advice and recommendations on the best USB port diagnostic tools. Our team of experienced technicians can help you select the right tool for your needs and provide guidance on troubleshooting and repair. Reach out to us at 456 Elm Street, Dallas, TX 75201, United States, or give us a call on Whatsapp at +1 (641) 206-8880. For more information, visit our website at CAR-TOOL.EDU.VN and discover how we can help you keep your USB ports running smoothly. Get in touch now and ensure your devices are always connected and functioning at their best!

By choosing CAR-TOOL.EDU.VN, you’re not just getting a tool; you’re gaining a partner dedicated to ensuring your automotive and electronic systems operate flawlessly.

15. USB Hardware Verifier Tool by Microsoft

The USB hardware verifier tool from Microsoft (USB3HWVerifierAnalyzer.exe) is used for testing and debugging specific hardware events related to USB devices. Hardware issues often lead to poor end-user experience, and it can be difficult to determine the exact failure. The USB hardware verifier aims at capturing hardware failures that occur in a device, port, hub, controller, or a combination of them. The USB hardware verifier can:

  • Capture hardware events and display information in real time.
  • Generate a trace file with information about all events.
  • Parse an existing trace file for event information.

15.1 Getting the USB Hardware Verifier Analyzer Tool

The USB hardware verifier tool is included with the MUTT software package available for download at Microsoft’s website. The tools package contains several tools that perform stress and transfer tests (including power transitions) and SuperSpeed tests. The package also has a Readme document that provides a brief overview of the types of MUTT hardware and step-by-step guidance about various tests you should run, and suggests topologies for controller, hub, device, and BIOS/UEFI testing.

15.2 How to Capture Events by Using a USB Hardware Verifier

To capture events by using the hardware verifier, perform these steps:

  1. Start a session by running this command at an elevated command prompt:
USB3HWVerifierAnalyzer.exe

The tool supports these options:

  • -v: Logs all hardware verifier events for the specified VendorID.
  • -p: Logs all hardware verifier events for the specified ProductID.
  • -f: Parses the specified ETL file. Real-time parsing isn’t supported. With this option, the tool parses the file offline.
  • /v output: Displays all events to the console.
  1. Run the test scenario for which you want to capture hardware events. During a session, the USB hardware verifier captures information about hardware events as they occur. If you want to filter events for a particular hardware, specify the VendorId and ProductId of the hardware. The tool might not capture some information (such as VID/PID) about events that occur before the device gets fully enumerated. The missing information is available in the detailed report that is generated at the end of the session.

Here’s the command line to filter by VendorId and ProductId:

USB3HWVerifierAnalyzer.exe -v 0781 -p 5595

Here’s an example output from the hardware verifier tool:

Session Name : TraceSessionFriJan271351112023
Attempting to start session TraceSessionFriJan271351112023...
Trace Session created...Status : 0
Provider Enable Success, Status : 0
Provider Enable Success, Status : 0
Provider Enable Success, Status : 0
Provider Enable Success, Status : 0
Provider Enable Success, Status : 0
Provider Enable Success, Status : 0
13319329877.425596: (UsbHub3/179) Event Message: Client Initiated Recovery Action
VendorID/ProductID: 0x5e3/0x612
DeviceInterfacePath: ??USB#VID_05E3&PID_0612#6&130491ac&0&4#{f18a0e88-c30c-11d0-8815-00a0c906bed8}
DeviceDescription: Generic SuperSpeed USB Hub
PortPath: 0x12, 0x4, 0x0, 0x0, 0x0, 0x0
Provider disable Success, Status : 0
Provider disable Success, Status : 0
Provider disable Success, Status : 0
Provider disable Success, Status : 0
Provider disable Success, Status : 0
Provider disable Success, Status : 0
Session Stopped...Status : 0
  1. Stop the session by pressing CTRL+C. At the end of the session, a file named AllEvents.etl is added in the current directory. This file contains trace information about all events that were captured during the session. In addition to AllEvents.etl, the command window shows a report. The report includes certain information that was missed in the real-time output. The following output shows an example test report for the preceding session. The report shows all events that the USB hardware verifier encountered.
Record #1 (Key = 0x57ff0de4858)
VendorID/ProductID: 0x451/0x2077
DeviceInterfacePath: ??USB#VID_0451&PID_2077#6&c4be011&0&2#{f18a0e88-c30c-11d0-8815-00a0c906bed8}
DeviceDescription: Generic USB Hub
PortPath: 0x2, 0x0, 0x0, 0x0, 0x0, 0x0
All errors encountered:
#1: (UsbHub3/176): DescriptorValidationError20HubPortPwrCtrlMaskZero
#2: (UsbHub3/179): Client Initiated Recovery Action
#3: (UsbHub3/179): Client Initiated Recovery Action
#4: (UsbHub3/179): Client Initiated Recovery Action
#5: (UsbHub3/179): Client Initiated Recovery Action
#6: (UsbHub3/179): Client Initiated Recovery Action
#7: (UsbHub3/179): Client Initiated Recovery Action
#8: (UsbHub3/179): Client Initiated Recovery Action
#9: (UsbHub3/179): Client Initiated Recovery Action
#10: (UsbHub3/179): Client Initiated Recovery Action
#11: (UsbHub3/179): Client Initiated Recovery Action
#12: (UsbHub3/179): Client Initiated Recovery Action
#13: (UsbHub3/179): Client Initiated Recovery Action
#14: (UsbHub3/179): Client Initiated Recovery Action
Record #2 (Key = 0x57ff62a36a8)
VendorID/ProductID: 0x1058/0x740
DeviceInterfacePath: ??USB#VID_1058&PID_0740#57583931453631414E5A3331#{a5dcbf10-6530-11d2-901f-00c04fb951ed}
DeviceDescription: USB Mass Storage Device
PortPath: 0x2, 0x4, 0x0, 0x0, 0x0, 0x0
All errors encountered:
#1: (UsbHub3/173): SuperSpeed Device is Connected on the 2.0 Bus
Record #3 (Key = 0x57ff79fd4e8)
VendorID/ProductID: 0x1edb/0xbd3b
PortPath: 0x3, 0x0, 0x0, 0x0, 0x0, 0x0
All errors encountered:
#1: (UsbHub3/176): DescriptorValidationErrorCompanionIsochEndpointWBytesPerIntervalTooLarge
#2: (UsbHub3/176): DescriptorValidationErrorCompanionIsochEndpointWBytesPerIntervalTooLarge
#3: (UsbHub3/176): DescriptorValidationErrorCompanionIsochEndpointWBytesPerIntervalTooLarge
#4: (UsbHub3/176): DescriptorValidationErrorCompanionIsochEndpointWBytesPerIntervalTooLarge
#5: (UsbHub3/176): DescriptorValidationErrorCompanionIsochEndpointWBytesPerIntervalTooLarge
#6: (UsbHub3/176): DescriptorValidationErrorCompanionIsochEndpointWBytesPerIntervalTooLarge
#7: (UsbHub3/176): DescriptorValidationErrorStringMismatchBetweenBlengthAndBufferLength
#8: (UsbHub3/176): DescriptorValidationErrorStringMismatchBetweenBlengthAndBufferLength

In the preceding example report, note the Key field value for each record. The report categorizes the information by those Key values, making it easier to read. The same Key values are used in events captured in AllEvents.etl.

  1. Convert AllEvents.etl to text format by running the following command:
USB3HWVerifierAnalyzer.exe -f AllEvents.etl /v > Output.txt

In the output file, search for the previously noted Key values. The values are associated with one of these fields: fid_UcxController, fid_HubDevice, and fid_UsbDevice.

  1. Open AllEvents.etl in Netmon and select Add to display filter to filter events by controller, hub, and device. For more information, see Microsoft’s documentation on how to install Netmon and USB ETW parsers.

15.3 USB Hardware Verifier Flags

The USB hardware verifier tool uses flags to indicate specific issues detected during testing. Here is a table explaining some of the key flags:

Flag Indicates that…
DeviceHwVerifierClientInitiatedResetPipe The client driver initiated a recovery action by resetting a particular pipe in response to I/O failures. Certain client drivers might perform error recovery in other scenarios.
DeviceHwVerifierClientInitiatedResetPort The client driver initiated a recovery action by resetting the device in response to I/O failures. Certain client drivers might perform error recovery in other scenarios.
DeviceHwVerifierClientInitiatedCyclePort The client driver initiated a recovery action by cycling the port. This flag causes the Plug and Play Manager to re-enumerate the device.
DeviceHwVerifierSetIsochDelayFailure A USB 3.0 device failed the SET_ISOCH_DELAY request. The device can fail the request because either the driver doesn’t require the request information or a transient error occurred. However, the driver can’t differentiate between those reasons. This error isn’t captured in the report.
DeviceHwVerifierSetSelFailure A USB 3.0 device failed the SET_SEL request. The device uses the request information for Link Power Management (LPM). The device can fail the request because either the driver doesn’t require the request information or a transient error occurred. However, the driver can’t differentiate between those reasons. This error isn’t captured in the report.
DeviceHwVerifierSerialNumberMismatchOnRenumeration The device reported a different serial number during re-enumeration as opposed to the one it reported during initial enumeration. A re-enumeration can occur as a result of a reset port or system resume operation.
DeviceHwVerifierSuperSpeedDeviceWorkingAtLowerSpeed The USB 3.0 device is operating a bus speed lower than SuperSpeed.
DeviceHwVerifierControlTransferFailure A control transfer failed to the device’s default endpoint failed. The transfer can fail as a result of device or controller error. The hub logs indicate the USBD status code for the transfer failure. This flag excludes SET_SEL and SET_ISOCH_DELAY control transfers failures. Those types of requests are covered by DeviceHwVerifierSetIsochDelayFailure and DeviceHwVerifierSetSelFailure flags.
DeviceHwVerifierDescriptorValidationFailure A descriptor returned by the device doesn’t conform to the USB specification. The hub log indicates the exact error.
DeviceHwVerifierInterfaceWakeCapabilityMismatch The RemoteWake bit is incorrectly set in the device. USB 3.0 devices that support remote wake must also support function wake. There are two ways in which the device indicates its support for function wake. The first way is through the bmAttributes field of the configuration descriptor and the second way is in its response to the GET_STATUS request targeted to the interface. For a non-composite device, the RemoteWake bit value must match the value returned by the GET_STATUS request that is targeted to interface 0. For composite devices, the RemoteWake bit must be 1 for at least one of the functions. Otherwise, this flag indicates that the device reported contradictory values in here.
DeviceHwVerifierBusRenumeration The device is re-enumerated on the bus. A re-enumeration can occur as a result of a reset port or system resume operation. Re-enumeration also occurs when the device is disabled/enabled or stopped/started.
HubHwVerifierTooManyResets A hub has gone through too many reset operations within a short period. Even though those resets were successful, the hub isn’t processing requests and repeated errors occur.
HubHwVerifierControlTransferFailure A control transfer targeted to the hub’s default endpoint failed. The transfer can fail as a result of device or controller error. The hub logs indicate the USBD status code for the failure.
HubHwVerifierInterruptTransferFailure A data transfer targeted to the hub’s interrupt endpoint failed. The transfer can fail as a result of device or controller error. The hub logs indicate the USBD status code for the failure. If the transfer failed because of the request was canceled, the failure isn’t captured.
HubHwVerifierNoSelectiveSuspendSupport The RemoteWake bit isn’t set to 1 in the hub’s configuration descriptor.
HubHwVerifierPortResetTimeout While enumerating or re-enumerating a device, the port-reset operation is timing out. A port change notification isn’t received indicating that the port-reset is complete.
HubHwVerifierInvalidPortStatus The port status of the target port isn’t valid as per the USB specification. Certain devices can cause the hub to report the invalid status.
HubHwVerifierPortLinkStateSSInactive The link between the target port and the downstream device is in an error state.
HubHwVerifierPortLinkStateCompliance The link between the target port and the downstream device is in compliance mode. In some scenarios involving system sleep-resume, the compliance mode error is expected, and in those cases, the failure isn’t captured.
HubHwVerifierPortDeviceDisconnected The downstream device on the target port is no longer connected to the bus.
HubHwVerifierPortOverCurrent The downstream port reported overcurrent state.
HubHwVerifierControllerOperationFailure A controller operation (such as enabling device, configuring endpoints) failed for the device that is attached to the target port. Failures from SET_ADDRESS and Reset endpoint requests aren’t captured.

Understanding these flags can help technicians and engineers quickly diagnose and address USB hardware issues.

Depiction of various USB diagnostic tools, including software interfaces and hardware testers used for analyzing USB port functionality.

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