Thx for the replies gents.
@ursm: The devices crashes and renders the device innumerable in the USB chain and thus does not provide a com. Same result in dmesg when I plug it in a Linux machine.
@Thomas: Indeed this is strange. I've attached the HopeRF specsheets and I do not see any difference. Also no difference in the XBee shields and used the multimeter to be sure. Or do you mean a High/Low inversion on the pin itself?