For use with mimio Capture in standalone mode (not connected to a computer). When the AC Adapter is plugged into the Xi Capture Bar and a powered 110V wall outlet, the mimio Capture will be on and ready to record anything written to the whiteboard at all times. It is not necessary to use the on-off button on the bar (as is necessary under battery power). When connected to a computer, the mimio Capture system draws its power requirements from the computer via the USB cable.