The USB FLASH memory , which by its acronym stands for Universal Serial Bus, is a storage device that presents many advantages to the user , both for its size and for its comfort, its resistance, its easy use and its storage capacity. It is the successor to compact discs and other file storage methods and has become a pioneer in it.The term USB is also applied to the type of connection , rectangular and narrow at the end of the cable, which is printed with its symbology, and which has been implemented in devices such as keyboard, mouse and external hard drives. Since its inception in 1996, it has provided a simpler experience and has evolved to new, more powerful modalities in information transfer.

What is USB for?

The Universal Serial Bus has simplified the handling of devices in the computational field and of smartphones, since it has proposed a universal way for their interaction.

The USB FLASH memory is used to:

  • Have a portable storage device
  • Facilitate transfer of files from computer to computer
  • Save a backup of all types of files
  • Manage storage intuitively

The USB connection is used to:

  • Have a high working speed
  • Standardize the connection between devices
  • Reduce the time required for data transmission
  • Reduce energy consumption in equipment

History of USB

In 1996 USB 1.0 was released , with the intention of applying it to keyboards and mice and devices that needed a very small bandwidth. The speed at which it allowed to work is 1.5 Megabits per second . In 1998 USB 1.1 appeared , with a speed of 12 Megabits per second . Both 1.0 and 1.1 are often called Full-Speed ​​USB .

In the year 2000 USB 2.0 emerged , significantly better than the previous ones. The speed reaches 480 Megabits per second. It is the most common to find computers that incorporate USB 1 and 2. These devices are called Hi-Speed ​​USB .

In 2009, known as SuperSpeedUSB , USB 3.0 emerged. It is standard for computer connectivity and has a data transmission speed of up to 5 Gigabits per second, which is ten times faster than USB 2.0. It significantly reduces the time required for data transmission, reduces power consumption and is compatible with USB 2.0.

USB 3.0 Features

In terms of consumption, USB 3.0 offers a power management feature that supports states such as: no load, sleep and suspended. This in order to make optimal use of the interface energy . The new interface provides enough power so that devices such as high-speed external hard drives do not require an additional power supply.

If a USB 3.0 device is being installed, the cable will probably be blue. You may see blue tabs on the connectors at the ends of the cables and on the ports on the computer or USB hub. All USB 3.0 ports and cables are identified with the USB 3.0 symbol, regardless of their color.


Samantha Robson
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Dr. Samantha Robson ( CRN: 0510146-5) is a nutritionist and website content reviewer related to her area of ​​expertise. With a postgraduate degree in Nutrition from The University of Arizona, she is a specialist in Sports Nutrition from Oxford University and is also a member of the International Society of Sports Nutrition.

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