When the Devo (specifically my 7E) is plugged in to USB and is in USB drive mode (not FW update mode) where is it powered from? It's internal pack or via USB? Just for the sake of curiosity is it the same in FW update mode?
I do not believe the Devo7e (or Devo8 or Devo10) can be powered from USB. The Devo12 can be powered/charged from USB. i don't know about the newer models.