Difference between USB 2.0 and USB 3.0

As many know, information technology is the processing of information through electronic devices that perform three specific tasks: input, processing and output information. Thus, in computing, a port is a connection that is used for the transmission of information. In this respect, the acronym USB, stands for “Universal Serial Bus” and consists of an interface that enables the connection of different devices such as boards, mice, bugles, mobile devices, among others.

However, there are several types of connectors on the market, however, USB has had a greater boom and utility, due to its capacity and ease in the process of connection and transmission of information, so there are different versions of USB, given that computer science is advancing with the passage of time. The USB port has also varied and improved in terms of its data transmission capabilities, to give the user a faster speed and thus, to optimize the operation of the peripherals installed in a computer. Such is the case of the versions USB 2.0 and 3.0, which, have the same function, however, each one has characteristics in terms of its data transmission capacity.

That said, this article will show the differences between these two versions of USB ports for the consideration of readers.

USB 2.0

Also known as Hi-Speed ??USB, it is a device that allows the transmission of data to about 60 MB / s, achieving to have an optimal speed of reading writing. Due to its characteristics, it has been taken as standard reference in the current computer science. Thus, most devices such as keyboards, mice, bugles, memories and multimedia devices use this type of USB 2.0 and in turn, this type of devices are compatible with all versions of Windows later than XP although it has backward compatibility with versions such as Windows 98.

USB 3.0

Also known as USB 3.0 Super Speed, it is a device that allows to transmit data to about 600 MB / s and allows to supply more power to devices that connect through this port. 3.0 devices can be connected to 2.0 ports, functioning properly, however, their speed would be limited by the capacity of port version 2.0.

Finally, here are some differences between USB 2.0 and USB 3.0:

  • USB 2.0 transfers data at a speed of 60 MB / s while USB 3.0 at 600 MB / s.
  • USB 2.0 is known as Hi Speed ??while USB 3.0 is known as Super Speed
  • USB 2.0 devices work correctly when connecting to USB 3.0 ports but sometimes USB 3.0 devices do not function properly when installed on USB 2.0 ports, coupled with the lower capacity of these ports.
  • The maximum power supply capacity on some computers with USB 2.0 ports is 2.5W (500mA / 5V) while USB 3.0 ports usually allow up to 4.5W (900mA / 5V).


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