You probably need to share the drives so they can see each other.  I do mine wirelessly over the network.  

How to share drives on a network

You could get one of these USB cables and use a thumb drive to share files.

 http://www.amazon.com/gp/product/B005QX7KYU/ref=oh_details_o02_s00_i00?ie=UTF8&psc=1


This is a good forum to help with questions about your tablet.

http://forum.tabletpcreview.com/dell/