I'm considering purchasing a wireless charger stand for my Lumia 950, and want to plug it into my SP3 Dock (USB 3.0 ports). The manufacture of the Qi charger mentions that I should use a source that has at least 2amps...when I look up the USB 3.0 spec on Wikipedia, it seems to suggest the min is 2a...is this true? What are the power outputs for the SP3 docking station USB ports?