Have you ever had a mains computer you wanted to move between offices or locations, without powering off?
Have you ever needed to move a desktop from one office, to another office, with the hard drives still spinning (ignoring the obvious risk)?
Have you needed these functions, but only as long as the travel time is no further than the time it takes for a non-portable UPS (which you have to carry) takes to discharge?
Do these scenarios occur for you, while your in the US?
No, No, No, and No? Same here
But in case you do, this is a gadget will help you out (assuming you have US plugs of course).