Installation on Windows
In order to access a USB device from Java on Windows, you need to install an adapting USB driver for that device. There can only be one driver installed for a given device, so if you've already installed the driver for your iBuddy or PC Gizmo, you'll have to replace it to use Busboy.
Zadig is a suitable USB driver. Download the correct version for the version of Windows you're running, and install it.