Go to Dell’s official support page for E6430 → Category “Security” → look for:
In Device Manager, right-click the "Broadcom USH" device, select Uninstall device , and check "Attempt to remove the driver for this device." Restart your computer, then install the driver again. Summary of Driver Compatibility Support for Latitude E6430 | Drivers & Downloads | Dell US
stands for Unified Security Hub . In the Dell Latitude E6430, this is not just a simple fingerprint scanner; it is part of a broader security ecosystem. The Broadcom USH device manages communication between the system and various security peripherals, the most prominent being the fingerprint swipe sensor located near the keyboard deck.