What is the difference between USB 2.0 and USB 3.0?
If you use a computer, laptop or mobile then it may not happen that you have not heard the word USB, USB has made our life very easy whether it is to transfer data or connect with any hardware computer. Whether or to connect the mobile phone to the charger, USB is being used everywhere, just as USB has changed our lives, in the same way, after the success of version 2.0 of USB, version 3.0 has come, here we are going to know. If you are also interested in USB 2.0 and 3.0, then read this article completely.
First of all, know what is USB?
USB Full Form Universal Serial Bus which is being used as Industry Standard where USB is used for most of the data transfer, today USB is being used with every hardware device like Pendrive, 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 data transfer speed. You can use a USB anytime, anywhere.
Now know where it came from and who thought
USB was conceived in 1996, which was named USB 1.X, which had a data transfer speed of 1.5 Mbps, after which USB 1.1 was released in 1998, USB 1.1 was designed by Microsoft, followed by USB 2.0 in the year 2000. It was launched, it was made by Intel and other companies, whose maximum data transfer speed was 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, whose maximum data transfer speed is 5Gbps. USB 3.0 is also named as SuperSpeed.
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How does USB work?
A Four-wire cable interface is used in USB, two wires are used to send or receive data, and the other two are used for power supply, USB 2.0 cable length up to a maximum of 5 meters. Maybe, 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 a huge amount of data and implement three steps –
- Token packet
- Data packet
- Handshake Packet
2- Data Bulk Transfer
Hardware Error Detection is used to find the error in this transfer process between Host and 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 in real-time at a constant rate.
4 – Interrupt Transfer Mode
In this mode, the first three steps are included and data is transferred, this transfer mode is used to use devices like mouse, keyboard.
What is the difference between USB 2.0 and USB 3.0?
Physical Structure – There is no difference in the physical structure of USB 2.0 and USB 3.0, there is a black blog inside the USB port of both devices.
Data Transfer Rate - On the one hand, where the data transfer speed of USB 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.
Types of Communication – USB 2.0 communication is One Way, meaning it can transfer data from Host to End Point, on the other hand, USB 3.0 communication is Two Way.
Power Consumption – While USB 2.0 is economical in terms of power consumption which is 500mA, on the other hand, USB 3.0 power consumption is 900mA.
Number of Wires – If we talk about the wires, then the number of wires in USB 2.0 is 4, on the other hand, the number of wires in USB 3.0 is 9.
Length of Cable – If you talk about the length of the cable, the length of the cable is 5 meters in USB 2.0, and if you talk about USB 3.0 then it is 3 meters.
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.
Standard B Connector – Standard B Connector is small in size in USB 2.0 and it is bigger in USB 3.0
Signal Mechanism – There is Polling Mechanism in USB 2.0 and Asynchronous Mechanism in USB 3.0.
Cost – If we talk about the price, then the cost of USB 3.0 is more than USB 2.0.
Hope you have understood what is USB, what is the history of USB, and what are the differences between USB 2.0 and USB 3.0, apart from how USB works, if you liked this article then share it with your friends.
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