Could not be so used as intended. The plan was to supply power an LCD monitor, a EeePC and a headphone amplifier. As soon as two of the three components, was in whatever combination, plugged, there were problems with the power supply of this equipment. But because my car has three outlets (but on the car distributed), the device could still be operated. Whether this is an isolated incident or a general problem, I can not say, because I have put no further effort in the investigation of this behavior. For me, this product is not to be used, so 1 star.