The is not a driver for normal serial communication. Instead, it’s a special-purpose driver used when a TUSB3410 chip is placed into bootloader mode (e.g., during firmware updates, or when the chip has no valid firmware loaded). In this mode, the device enumerates as “TUSB3410 Boot Device” rather than a standard COM port.

| Feature | Description | |---------|-------------| | Driver name | tusb3410.sys (or similar) | | Device class | Vendor-specific (not CDC) | | Supported OS | Windows XP, Vista, 7, 8, 10 (with signature tweaks) | | Function | Allows vendor-specific control transfers for firmware download | | Lifespan | Active only until firmware is downloaded; then device re-enumerates |

This is a deliberate design feature. It allows the chip to act as a "blank slate," waiting for the host computer to download the specific USB-to-Serial firmware to its internal RAM. Once that firmware is downloaded and executed, the device "disconnects" and reconnects as a fully functional USB Serial Port (often identifying as a COM port).