Not sure about the dongle as I don't have any programs that use it. For networking, go to the network settings.
Under adpater 1:
a) make sure it's enabled.
b) attached to: bridged adapter
c) for name, select your real network adapter
d) adapter type: PCINet Fast III
e) promiscuous mode: deny
I'm using version 4.1.4r (yes, I need to upgrade it).
I just downloaded the virtualbox extension pack. they say it adds support for usb 2.0...lets see if that helps. i'll inform you asap.