| Hardware Product | Typical Use Case | Working Driver Source |
|----------------|------------------|----------------------|
| Alcor AU94XX | SD/MMC card reader | Alcor Micro Generic Card Reader Driver v1.0.3.4 |
| HP Smart Card KB | Secure login (CAC/PIV) | HP SoftPaq – USB CCID (uses pid_FA04) |
| Lenovo Fingerprint Reader | Windows Hello (T440p era) | Lenovo Alcor Micro Fingerprint Driver |
| Cherry ST-1044U | e-ID authentication | Cherry USB CCID Driver (Alcor variant) |
If your device is a multi-card reader (SD/MMC/MS/xD), the working driver is usually AlcorMP.exe (for firmware updates) plus a standard USB mass storage driver. In that case, the "Unknown" appears because the device is in firmware mode – you need to flash the proper firmware using AlcorMP under Windows XP/7 compatibility mode. alcor micro unknown fa00 f w fa04 work
The most unique and useful feature for FA00 / FA04 devices is: | Hardware Product | Typical Use Case |
There are three reliable ways to solve this. We recommend trying them in order. Result: The unknown device will rename to "Alcor
90% of the time, the FA00/FA04 is an OEM Smart Card Reader.