Far-seeker:
Also I think the 2011 Arduino ADK board has the Host/Slave interface as a built-in feature.
Yes thank you Far-seeker I was looking at the MAX3421E as it may be at least an experimental platform for experimentation.
If I could get the Arduino to look like a mass storage device to a pc by programming one of these as a slave device and understand the coding behind that then I would be a long way forward as I would also understand a lot more of the communication commands that I need to work with and support.
Excellent starting point much appreciated