I can't say for sure on an interior, but our verandah room had 2 USB ports at the desk and I think one at the bed in the clock. There is also an outlet on one side of the bed(same side as the clock) and maybe 3 or 4 110 outlets at the desk along with a 220. I felt like the usb ports provided charged really slow, but maybe that was in my head. I had forgotten to bring my 4 port USB charger so we made it work.