Alcor Micro Usb Repair Tool Au6989sngtc Au6998sn Free Extra Quality Jun 2026

: The tool installs a special low-level filter driver to communicate with the controller. If the program crashes or is closed improperly, this driver can stay active and disable all other USB 2.0 ports on your computer. To fix this, you may need to manually remove the mpfilt driver from the Windows registry.