This script queries the system for all COM port devices and matches them with their registry-stored location, outputting a clear table of connections.

If the error persists after all steps, it is highly likely that the connected device itself is failing and may need to be replaced.

The text "port- 0009.hub- 0003" refers to a specific physical or logical USB port address on your computer. This identifier is commonly seen in Windows Device Manager

Example: In a datacenter inventory, "port-0009.hub-0003" might appear in logs: "link-down port-0009.hub-0003" → operator maps to physical rack and patch panel via stored mapping.

When a device at this location fails, you might see error messages such as (device reported a problem) or Device Descriptor Request Failed . These issues typically stem from: Shows Unknown Device. Port_#0003.Hub_#0001 (Code 43)

: This signifies the ninth numbered port on the previously mentioned hub ( Hub_#0003 ). In this context, Port_#0009 is the physical or logical connector on that hub into which your device is plugged. It's important to note that a device identified this way is connected to port number 9 on hub number 3 within the device tree.

Demystifying Windows USB Architecture: Solving the Port_#0009.Hub_#0003 System Error

When you encounter an error tied to a specific port and hub address, here is a step-by-step checklist to resolve the issue:

You can also use PowerShell to query this information programmatically:

At the top sits the host controller (typically an xHCI controller for USB 3.0/3.1/4.0), which manages communication between your motherboard and external components. The Hub ( Hub_#0003 )

: High-speed devices (like external SSDs) require specific bandwidth. By mapping the "Hub- 0003" hierarchy, the system can determine if too many high-demand devices are sharing the same controller, which would lead to performance bottlenecks. Driver Association

What is plugged into that port (a printer, a drive, a webcam)? Did this happen after a system update or a power surge ?

The string is not a consumer product or a specific gadget; it is a location identifier generated by a computer's operating system (likely Windows) to describe where a USB device is physically or logically connected. What This Identifier Means