The Alcor Micro Au6370 controller acts as the bridge between your computer's USB bus and the flash memory card slots. It handles data transfer for formats like Secure Digital (SD), MultiMediaCard (MMC), and Memory Stick (MS). Windows usually installs a generic "USB Mass Storage Device" driver for this chip, but the official Alcor driver is required for full speed, high-capacity support (SDHC/SDXC), and power management features. Driver Compatibility Across Windows Versions Windows Version Driver Support Status Recommendation Generic support available Use Windows 10 driver in Compatibility Mode if issues occur Windows 10 Fully supported Use official Alcor driver package v1.0.x or newer Windows 8 / 8.1 Fully supported Use official Alcor driver package Windows 7 Native & legacy support Manual installation often required for older hardware How to Download and Install the Alcor Au6370 Driver Method 1: Automated Installation via Device Manager
Enter your computer’s specific serial number or model name. Go to the section.
Windows often carries certified Alcor drivers in its central repository. Right-click the and select Settings .
For older Windows versions (7, 8, 8.1), Windows Update may still provide a basic driver. If not, you can try generic drivers from sites like Station-Drivers or DriverGuide. However, for older systems like Windows 98 or ME, the device should work with the default drivers included with the OS.
is used by many different laptop brands, the best "maps" (drivers) were often hidden on manufacturer sites like Lenovo Support HP Support The Ritual of Reinstallation:
If you downloaded a raw driver package containing .inf , .sys , and .cat files instead of an installer setup, use this manual approach: Open and right-click your Alcor device. Select Update driver > Browse my computer for drivers .
If you need to revive an old Alcor AU6370-based reader on Windows, you’ll likely be fine – especially on Win7 or 8. For Win10/11, don’t expect a pretty installer, but the hardware usually works with built-in drivers. Just don’t buy one new for modern fast SD cards; this chip is best for legacy card recovery.
A community-driven driver repository offering Alcor USB Smart Card Reader drivers, including version (WHQL-certified August 27, 2025). This is a trusted source but not an official manufacturer site.
The is a highly integrated USB 2.0 Flash Disk Controller chip commonly found in generic USB flash drives, card readers, and MP3 players. If you have plugged a device into a Windows computer and found it unresponsive, or if Windows Update fails to find the necessary software, you likely need to understand how the AU6370 driver works.
If you see a yellow triangle next to "WPD FileSystem Volume Driver" or "Alcor Micro USB Smart Card Reader":
Select the Alcor Micro driver if listed, then click .
If your device is not being detected, follow these steps in order.
If you're unable to install the driver using the above steps, try the following alternative methods:
