Android tablets just don't work that way. If you need to add things onto the external SD card use a USB adaptor.
Most things you would have done with ActiveSync are done via wifi on these pads, far nicer tbh.
Usb is mainly there for debugging applications through the ADB program.
Here's the manual...http://developer.android.com/guide/deve ... s/adb.html
But you really want to be looking at other places such as SlateDroid, XDA-developers for interesting stuff..
Also you probably want to install andappstore (if its not already in this firmware, can't remember off the top of my head) as this is where you will find most of the sync tools anyway.