The hardware is designed to ensure credentials are never exposed directly to the main operating system layer. When the Broadcom USH driver goes missing, the system loses its secure communication path to these peripherals. Consequently, Windows marks the hardware component as an unidentified, non-functional item. Why the Driver Problem Happens
The sensor was designed primarily for and Windows 8 using Dell Data Protection | Access (formerly Wavesys Manager). It could: broadcom ush w swipe sensor e6420