Alcor Micro Unknown Fa00 F W Fa04 Work -
AU6989SN-TA
The error "Alcor Micro Unknown [FA00] - F/W FA04" indicates a firmware or controller issue on a USB flash drive , typically identifying it as an or AU6989SNCS-TA controller. This error usually occurs when the drive's firmware is corrupted, leading it to report generic identifiers like VID 058F and PID 1234 instead of its actual specifications. Troubleshooting Steps
There are three reliable ways to solve this. We recommend trying them in order. alcor micro unknown fa00 f w fa04 work
Method 1: Let Windows Try (Usually Fails, but Try Anyway)
Brief troubleshooting commands (examples) AU6989SN-TA The error "Alcor Micro Unknown [FA00] -
Add VID/PID
Select and Save InstallDrive to ensure the tool can hook into the device. Here is a technical write-up regarding the "Alcor
unique and useful
The most feature for FA00 / FA04 devices is:
USB\VID_058F&PID_FA00&REV_0100USB\VID_058F&PID_FA04&REV_0001
Here is a technical write-up regarding the "Alcor Micro Unknown FA00/FA04" issue, what it means, and the work required to resolve it.
- OEM Customization: HP, Dell, and Fujitsu often buy these chips and customize the firmware. They do not submit drivers to Microsoft's generic catalog.
- Legacy Status: This chipset is from the late 2000s / early 2010s. If you are on Windows 10 or 11, the original Vista/7 drivers are present but not automatically assigned.
- Confusion with Biometrics: The FA04 variant is sometimes a fingerprint swipe sensor. Windows might try to force a generic Smart Card driver, which fails.