At least one USB host is used for the CDMA card inside. Like all other WWAN cards It's connected via USB. I could even put it in my laptop.(I have no drivers as of now, and I don't live in the US.)
So You could make a passive mechanical adapter to get a normal USB port, put it in a USB Hub and have plenty of USB ports to connect everything you want.
Details at the end of this page:
http://ikindle3gs.eu/
Some adapter that -might- work:
http://cgi.ebay.com/ws/eBayISAPI.dll...m=270424109733