What are the differences between USB 2.0 and USB 3.0

    If you use a computer, laptop or mobile, it may not be that you have not heard the word USB, USB has made our life very easy whether transferring data or connecting with any hardware computer Whether it is to connect the mobile phone to the charger, USB is being used everywhere, just as USB has made changes in our lives, similarly after the success of version 2.0, 3.0 has arrived, here we are going to know. If you are also interested about USB 2.0 and USB 2.0 and USB 3.0, then read this article completely.

    First of all, know what is USB

    USB’s are Full Form Universal Serial Bus which is being used as Industry Standard where USB is used for most data transfer. Today USB is currently being used with every hardware device like Pan drive, Hard Disk Drive, Keyboard, Mouse, Mobile Charging Port. etc. There are many advantages of USB, out of which two main advantages are the physical structure of USB and second the data transfer speed you can use USB anytime anywhere.

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    Now know where it came from and who thought

    USB was conceived in 1996 named as USB 1.X with a data transfer speed of 1.5 Mbps followed by USB 1.1 released in 1998. USB 1.1 was designed by Microsoft followed by USB 2.0 in the year 2000. Launched, it was co-created by Intel and other companies with a maximum data transfer speed of 480 Mbps which was much higher than USB 1.1, this USB 2.0 became more popular due to its data transfer speed and its use in most devices In the same sequence, USB 3.0 was launched in the year 2008, with a maximum data transfer speed of 5Gbps USB 3.0 has also been named Super Speed.

    How does USB work

    USB uses four wire cable interfaces, two wires are used to send data or receive data, and the remaining two are used for power supply, USB 2.0 cable length up to a maximum of 5 meters There are four data transfer modes for USB, The function of Control Transfer is to configure the device and read the status information.

    1- Bulk Transfer Mode

    It is used to deliver massive amounts of data and implement three steps –

    1. Token packet
    2. Data packet
    3. Handshake packet

    2- Data Bulk Transfer

    Hardware Transfer Detection is used to find the error in this transfer process between the Host and the End Point Device.

    3- Isochronous Transfer Mode

    This mode is used to transfer data in real time, it is used to send audio and video data at a constant rate in real time.

    4 – Interrupt Transfer Mode

    This mode involves the first three steps and data transfer is done. This transfer mode is used to use devices like Mouse, Keyboard.

    1. Physical Structure – There is no difference in the physical structure of USB 2.0 and 3.0. Black blog is inside the USB port of both the devices.
    2. Date Transfer Rate – While the data transfer speed of 2.0 is 480 Mbps, the data transfer speed of USB 3.0 is 4800 Mbps which is almost 10 times more than the speed of USB 2.0.
    3. Types Of Communication – USB 2.0 communication is One Way means you can transfer data from Host to End Point, on the other hand USB 3.0 communication is Two Way.
    4. Power consumption – On one hand, where 2.0 is in the case of Power Consumption, which is 500mA, on the other hand, Power Consumption of 3.0 is 900mA
    5. Number of Wires – In terms of wires, the number of wires in 2.0 is 4, on the other hand, in 3.0, the number of wires is 9.
    6. Length of Cable – If we talk about the length of the cable, the length of the cable in USB 2.0 is 5 meters, the same if it talks in USB 3.0, then it is 3 meters.
    7. Standard A Connector Color – If we talk about Standard Connector Color then the color of USB 2.0 is gray and if we talk about USB 3.0 then it is blue.
    8. Standard B Connector – Standard B Connector is smaller in  2.0, same size larger in  3.0.
    9. Signal Mechanism – USB 2.0 has Polling Mechanism, same 3.0 has Asynchronous Mechanism
    10. Cost – In terms of price, the cost of USB 3.0 is more than 2.0.


    Hope you understand what USB is, what is the history of USB and what are the differences between USB 2.0 and 3.0, apart from how USB works, if you liked this article then it should be shared with your friends. Definitely share and comment us if you have any dilemma in your mind.


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