What is the difference between a socket and a USB port?

IM really confused, what is the difference?

A wall outlet is the output you plug in an electrical device in order to let electricity pass through so that the robot works. A table lamp, a toaster, a clock radio... All plug into a wall outlet.

A USB Port on a computer or a hub is opening that allows the connection of a USB cable. The cable that comes with an iPhone, iPad, iPod touch has a USB cable. The USB port on a computer may provide current to load or to establish a connection for transfer of files and photos from the computer to the device.

Wall outlet

USB port

Tags: iPad

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