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A cable is a cord which is composed of different conductors, which are isolated from each other, and which is covered by a wrap as a protection. USB , on the other hand, is the acronym corresponding to Universal Serial Bus : a standard that, in the field of computing, establishes the protocols and connectors used in a bus for the connection of devices.

He USB Cable therefore it is the connector which allows linking different elements through the Universal Serial Bus . This interface was created in the second half of the decade of 1990 for various Business , as Microsoft , Intel , IBM and NEC , to make your devices compatible.

In a computer (computer) that has USB ports , it is possible to connect all types of peripherals: from a keyboard to a mouse (mouse), through a printer, a scanner, speakers or a game controller (gamepad). You can even connect external (hard) hard drives, cards to tune the TV and other devices.

Suppose we want to copy the photographs we take with a digital camera on our computer For this we must have a USB Cable that at one of its ends present the necessary connector to plug into the camera. Usually cameras already come with this cable included. Therefore, we must connect one end of the cable to the camera and the other to the USB port of the computer. It is likely that the equipment recognize this connection automatically and offer us the possibility to copy the images in question.

In addition to the transfer of data , the USB cable is used to power the devices, either to charge their batteries or simply to allow them to function. At present, it is very common for monitors to have one or more USB inputs so that the user can easily charge phones and tablets by plugging them directly in there, instead of the computer tower, which is usually in a less accessible place.

Although one of the principles of the USB standard is the simplification of connections, the interests of hardware manufacturers and the desire that many companies have to stand out from the competition at any price have led to the creation of too many types of connectors , to the point of generating confusion for less expert consumers. "Do I need a" micro "or" mini "USB cable to connect this graphics tablet? Also, is it type A or B?"

Let's see the most common types of USB cable :

* type A : This is the most used type. In fact, it is what we usually find in the entrances of computers, both desktop and portable. When we say "USB" in everyday speech, we usually think of this type of connector;

* type B : It has a "square" connector and used to be used in most printer models, although nowadays it is not so common;

* type C : It is the most used today. With respect to its predecessors, it offers a speed of transmission of higher data and is also able to transfer more electrical energy. Most of the successful devices of recent times have adopted this type of USB connector, including the Nintendo Switch console, which uses it for charging its battery and transmitting image and sound to the TV, all through a USB cable very thin;

* mini USB : before the emergence of the USB C cable, this was the most common type in mobile phones and digital cameras;

* micro USB : still used for load of certain mobile phones, especially those of medium and low range.

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