If the driver loads, you will see: usb 1-2: CAN device gs_usb attached
If you see red "Error Frames" in your software, check the 120Ω termination resistor . Most iTek adapters have a physical switch or jumper to enable this, which is required at both ends of a CAN bus to prevent signal reflection. 💡 Pro-Tip for Developers itek usb can driver