Verify that the device appears without any yellow exclamation marks. Advanced Architecture and Technical Specifications
software is often free, it may require a license key (e.g., "123-45678") to be activated via the Softing License Manager System Specs ffusb 4 in 13 driver
The most common cause is installing the driver software after plugging in the device. To resolve this, uninstall the device from Device Manager, uninstall the driver software via Control Panel, reinstall the driver software, and then reconnect the FFUSB. Verify that the device appears without any yellow