Our loadmasters have been using ships power for several years to power their laptops and printers with no ill effects noted. We are now installing computer work stations on the upper decks with dedicated power plugs using ships power. (115vac 400mhz). One of our guys told me that when he deadheaded on an Asian carrier recently, they had standard type plugs at the seats instead of power port. I have to agree with Qavion about using plugs not specifically approved for laptop use, but some pax just do it anyway and most F/As are reluctant to make them unplug.