Camera/USB selector enables switching between DC OUT destinations to let you choose to supply electrical power to either the camera body or other electronic devices connected via USB ports.
DC OUT/CHARGE switch placed at the centre of the control panel allows you to choose either supplying power from the batteries or charging the batteries. This battery adaptor provides three screw sockets on both top and bottom of the unit (a total of 6 sockets), allowing a flexible rig setup using a mounting plate and screws.