When a drive functions normally, Alcor Micro chips use specific PIDs assigned to final products. If your device manager reads , the drive has entered a generic "fail-safe" or bootloader mode. The microcontroller is active, but it cannot read the configuration data from the flash memory chip. Common Symptoms of This Issue
Visit a trusted USB repair archive site (such as FlashBoot or USBDev).
Unplug all other unnecessary external USB storage drives to prevent accidental formatting.
When a device with these IDs is connected, it generally reports the following hardware profile: Vendor ID (VID): (Alcor Micro Corp.) Product ID (PID): Manufacturer: Product Model: USB Flash Disk / Mass Storage Device Common Controllers: Alcor Micro AU6986, AU6988, or AU6989SN series USB Version: USB 2.0 (High Speed) Common Use Cases and Problems usb device id vid 058f pid 1234 full
If you want, I can analyze a descriptor dump from your system (paste the lsusb -v output or a USBView dump) and explain the fields and recommended drivers.
Extremely inexpensive; often given away for free as promotional items.
or "No Media," it often indicates a corrupted firmware or a "fake" drive where the controller has lost its connection to the flash memory When a drive functions normally, Alcor Micro chips
Alcor Micro is a prominent semiconductor company specializing in USB-related controllers, including:
Ranges from ~11 MB/s to over 60 MB/s depending on the flash chip Ranges from ~4 MB/s to ~28 MB/s Capacities Commonly seen in 2GB, 4GB, 16GB, and 32GB variants Common Issues and Recovery
Understanding USB Device ID VID 058F PID 1234: A Comprehensive Guide Common Symptoms of This Issue Visit a trusted
The drive cannot write new data, even if the user hasn't enabled physical write protection. How to Fix/Repair USB VID 058F PID 1234
This indicates that the USB controller is still alive, but the NAND flash is not being detected. You will need to attempt a low‑level controller repair using AlcorMP tools, as described in the advanced repair section above.