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A universal serial bus ([https://en.wikipedia.org/wiki/USB USB]) connector standardizes the connection of keyboards, pointing devices, digital cameras, printers, portable media players, disk drives and network adapter) to personal computers and HDTV, both to communicate and to supply electric power.
An example use is to display digital photos on the TV, or to provide power to a streaming media device such as a [https://en.wikipedia.org/wiki/Roku Roku] stick.
== Energy Consumption ==
