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Difference Between USB 2.0 and USB 3.0

February 19, 2011 Posted by Olivia

USB 2.0 vs USB 3.0

USB 2.0 and USB 3.0 are two versions of the USB standard. USB stands for Universal Serial Bus and is a device that has transformed the way communication between a computer and other gadgets such as mouse, keyboard, digital cameras, media players etc is established today. It is a device invented by Ajay Bhatt. Since its invention, USB has virtually replaced everything that had been earlier used for this purpose. Though invented for computers, USB has become so popular that it is being used on virtually every new electronic device being manufactured today. All smartphones, video game consoles and PDA’s are making use of USB as a power cord today. Even Bluetooth headsets and GPS chargers are making use of USB today. The immense popularity of USB can be judged by its worldwide sales of more than 2 billion units in 2008. One striking feature of USB is that it even charges many devices while being connected with a computer.

So far there have been three versions of USB. While USB 1.0 was released in 1996, USB 2.0 came into existence in 2000. It was in 2008 that USB 3.0 was introduced. Let us see the differences between USB 2.0 and USB 3.0.

Very high speeds

USB 3.0 is a major advancement when we compare it with USB 2.0. The biggest difference lies in the speed with which USB 3.0 can communicate with the host controller which is a computer. Good thing about it is that it is backward compatible that is it can be used with USB 1.0 and USB 2. 0. While USB 2.o had a maximum speed of 480 Mbps, which was considered sufficient at that time, now with availability of devices with capacity of up to 64 GB, it looks very slow. Data transfer from devices with such huge capacities may take hours with USB 2. 0. Introduction of USB 3 .0 has revolutionized data transfer between devices and computers with maximum transfer speeds of 4.8 Gbps which is a huge improvement over earlier speeds. This is 10 times the speeds that could be achieved with USB 2.0

Greener

In terms of power usage and requirements, USB 3.0 is much greener in comparison to USB 2.0. USB 3.0 devices provide more power to the gadgets and conserve power when the device is idling or getting charged.

Better transfer rates with USB 3.0 allow devices with high bandwidth such as Hi definition video streaming possible. Digital video recorders have now found a perfect partner in the shape of USB 3.0 to communicate with a computer. With its better and faster performance, USB 3.0 leaves other devices such as Bluetooth and e-SATA far behind. Though there are not many USB 3.0 devices out there, but with Windows having incorporated it in Windows 7 and motherboard manufacturers providing a port for it, the day is not far when USB 3.0 will become a standard for the industry. Good thing about it is that it will allow use of USB 2.0 and USB 1.0.

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Filed Under: Systems Tagged With: 4.8 Gbps, 480 Mbps Full Speed, Ajay Bhatt, Bluetooth, Bluetooth headsets, Data Transfer Speed, digital cameras, Digital video recorder, e-SATA, GPS chargers, Hi definition video streaming, keyboard, media players, Mouse, PDA, Smartphones, Universal Serial Bus, USB 1.0, USB 2.0, USB 2.0 FS, USB 2.0 Full Speed, USB 3.0, video game consoles

About the Author: Olivia

Olivia is a Graduate in Electronic Engineering with HR, Training & Development background and has over 15 years of field experience.

Comments

  1. Tony says

    November 24, 2018 at 11:52 pm

    Many thanks for the “no gobbledegook” explanation of these differences! I am 72 & find it difficult to follow lots of computing phrases Etc, you made it very clear. CHEERS, Tony.

    Reply
  2. larryzweig says

    September 1, 2019 at 6:11 pm

    I have 6 usb cables and developer options activert on my android. Connect with 3 will ALWAYS show my phone on my PC. The other 3 will ALWAYS charge my phone, but NEVER allow the developer/debug options.
    Is there a(n organized)difference between cables that leads to these differences?

    Reply

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