A:AnswerThe USB ports need the switch set to adapter mode which gives you 5V, 2.4 amps max. It also states the adapter mode is for 275 watts max.
I don't know it the means you can do both at the same time, USB and 275 watts max on 120 V AC
A:AnswerThis depends of the country where you are coming form. In order for us to provide you the most accurate information please give us a call at: 800-499-3964.