Mine states "110-240V" and I see no reason why they should have sold something different in the US.

Evenmore as the one PB I bought with it's box came with a whole assortment of cables and adaptors including one for US power outlets.

If the US seller is unable to provide an European cable (Norway seems to use the same Schucko-variant as Germany) you'd have these options:

- cut the cord and install a new plug (warning if you clueless you might kill yourself, burn down your house or cause WW3)

- use a 2 prong "euro" plug that is part of any Apple PSU delivered with iPhones, iPads,MacBooks

- use a 2 prong cable as found on some TVs, stereo racks etc

- buy an replacement PSU (make sure it's 65W, the 45W types won't be able to charge the battery while the PB is running)