However, the term "driver" in the context of libusb requires nuance. libusb does not eliminate the need for a driver entirely; rather, it separates the "bus driver" logic from the "device-specific" logic. The operating system still handles the enumeration of the device and the electrical protocols. What libusb eliminates is the need for a custom kernel driver. It provides a generic "pass-through" mechanism. This makes it ideal for devices that do not fit into standard USB classes (like mice, keyboards, or mass storage), such as oscilloscopes, CNC controllers, firmware flashers, and cryptocurrency wallets.
Third, the . Users must manually manage locking around device handles and transfer submission, leading to subtle concurrency bugs. Recent versions have improved this, but the library’s legacy as a single-threaded design persists. libusb driver