A viral video of a couch shooting sparks out of its USB ports has caused concerns, but how risky are these couches, really?

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If you find yourself awkwardly trying to charge your smartphone or tablet whilst sitting on your sofa or lying in bed, you might like to give a new gadget a little more investigation called the ...

You might've noticed that some USB ports on laptops or desktops are labeled differently. These ports may also have a curious symbol or icon next to them and if so, they could be sleep-and-charge ports ...