The USB connection uses the FTDI USB to Serial. With the latest versions of Windows and starting with Mac OS X 10 the Converter is "plug and play" as the USB drivers are included in those operating systems.
For older systems, such as Windows XP or Mac OS X 9 and earlier, a driver may be downloaded to your PC and installation is straightforward.
The Converter simply plugs into the Combby and connects to the PC with a USB cable which is part of the Converter.
The converter has two indicator lamps which can be used to verify loom operation.