Tesca Global Blog

Malware doesn’t usually announce itself as an Alcor Micro device with a consistent USB VID/PID. The bigger clue: the device is always present (even after a reboot) and doesn’t change behavior.

When your computer identifies a USB drive as "Alcor Micro Unknown FA00 F/W FA04," it indicates that the firmware on your (typically the AU6989SN series) has become corrupted or is in an uninitialized state. This error often manifests as a "No Media" or "0 Byte" capacity issue. Understanding the FA00 F/W FA04 Error

Look for packages labeled with support for AU6989SN-TA / AU6989SNCS .

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