The Beagle Bone Blue can be operated with the 12V DC Power supply, 7.4V DC from a battery or with the 5V from the USB. Please note that you can’t run the motors when only powered over USB, so you have to connect an 7.4V battery or the 12V Power supply.
The picture shows the pin assignment of the Beaglebone Blue:
|Beaglebone blue circuit diagram|
|Beaglebone blue connector pinout|