Port- 0009.hub- 0003 | No Sign-up

For example, a user reported seeing the following in their system logs: "Port_#0003.Hub_#0001 Unknown USB Device (Device Descriptor Request Failed)" . They noted that their physical USB ports showed errors on Port_#0014 and Port_#0015 . This led them to the correct conclusion that Port_#0003.Hub_#0001 did not refer to an external port, but instead to an internal port. This internal port was likely being used by an internal component, such as a or a Wireless card that connects via USB. The user was thus able to deduce that their Bluetooth device had failed, not that a ghost device was being plugged into their computer.

0009 almost certainly means with leading zeros to maintain a fixed width (common in configuration files, serial numbers, or legacy systems).

Look for a hub listed as hub-0003 and a downstream port port-0009 . port- 0009.hub- 0003

: Refers to the 9th structural data pathway allocated under that hub.

The driver managing the USB controller or the device itself is outdated or corrupted. For example, a user reported seeing the following

If you are seeing this code because a device is not working, follow these steps to reset the connection: Perform a Power Cycle

: This identifies the specific physical or logical "slot" on that hub. A port being numbered as "0009" suggests a high-capacity controller, as standard internal headers often support fewer ports. This internal port was likely being used by

The error typically indicates a USB Device Not Recognized issue in Windows, often accompanied by Code 43 or a "Device Descriptor Request Failed" message. This means your computer sees something is plugged into that specific internal or external connection point but cannot communicate with it. Common Fixes

is a specific hardware location identifier used by the Windows operating system to pinpoint exactly where an Unknown USB Device or a malfunctioning hardware component is physically connected to your computer's motherboard.