The unit comes with a docking station for connecting to your computer, but there's also a standard USB port on the bottom of the unit in addition to the docking connector, so presumably you don't need to lug the dock around with you to transfer files on the go.

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The unit comes with a docking station that makes for a quick connection to external speakers as well as a TV set, but also doubles as a battery charger.

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The Discovery shuttle brought the new power unit to the ISS, docking with the platform late on Tuesday (GMT).

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It involves the docking a small robotic spacecraft onto the surface of an asteroid and then using the same propulsion unit that got it there to push the asteroid off its course.

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