There is a switch on the Romeo v2 next to the VIN screw terminal. In the wiki, it says that this is used to isolate motor power from the board, while a google shows that the switch is for system and motors (power switch).
Which one is correct?
Wiki: Romeo_V2-All_in_one_Controller__R3___SKU_DFR0225_-DFRobot
The google source: