s!OK. The Due info sheet http://arduino.cc/en/Guide/ArduinoDue is quite confusing, as it says that the board may be powered from the USB port, but then a paragraph later it says it can't, and it must be powered by the DC adaptor if the board is a host.So could we get some clarification, specifically :-for testing, "first light" purposes (i.e. out of the box), what is the best method for powering the board?
The board can take power from the USB connectors or the DC plug. If using the DC connector, supply a voltage between 7V and 12V.The Arduino Due has an efficient switching voltage regulator, compliant with the USB host specification. If the Native USB port is used as host by attaching a USB device to the mirco-A usb connector, the board will provide the power to the device. When the board is used as a usb host, external power from the DC connector is required.
When using the Due as a host, it will be providing power to the attached device. It is strongly recommended to use the DC power connector when acting as a host.