Developed an enhancement for the lowRISC/opentitan repository’s USB subsystem by improving error messaging during USB device detection. Focused on Rust and system programming, the work introduced more informative feedback when no USB device or multiple devices were found, including detailed search criteria in the messages. This targeted feature aimed to streamline the developer experience by reducing debugging time and accelerating feedback during USB-related continuous integration tests. The implementation maintained repository standards and adhered to OpenTitan coding guidelines, delivering the change in a single, clear commit. Emphasis was placed on robust error handling and clear communication for future maintainability and usability.