The small AC adapter works of 110-240V, so you can load any USB device so that,
as it has 10W, the loading of iPads is not a problem.
If the PlugBug plugged into the MacBook power adapter, one has the same advantage that the combination
fits in any aircraft or US wall outlet and can be operated as the laptop and casually
even a USB device can be charged.
The build quality is good, it is humming nothing and it fits excellently situated on the Apple AC adapter.
For anyone who is often times in the US, the device is a real relief and it is possible to
two adapter plugs without.