libraries download: https://github.com/felis/USB_Host_Shield_2.0 GitHub - felis/USB_Host_Shield_2.0: Revision 2.0 of USB Host Library for Arduino. Revision 2.0 of USB Host Library for Arduino. Contribute to felis/USB_Host_Shield_2.0 development by creating an account on GitHub. github.com move 'USB_Host_Shield_library' to 'Arduino/libraries'. examples->HID->USBHIDBootMouse = wire mouse