What is USB 4? What’s the upgrade compared to USB 3.1, 3.2?

USB 4.0 is the latest USB standard that is expected to be released in mid-2019, so what is USB 4 and what is the upgrade compared to USB 3.1, 3.2 on phone and laptop devices? Let’s find out with Tnhelearning.edu.vn now!

What is USB 4?

USB 4 is the next generation of USB 3 that uses dual channels to achieve data transfer speeds of up to 40 GB/s and improved compatibility regardless of which cable or port the user uses.

Features of USB 4

Speed

Currently, USB 3.1 and USB 3.2 only have a bandwidth of 20Gbps , which means that the USB 4 standard with a data transfer rate of 40 GB / s will transfer more than 2 times more data than the latest USB 3 standard version. 8 times faster than the first USB 3 standard, the speed will also be doubled if the same amount of data is transferred.

Compatibility

USB4 works and is backward compatible with USB 3.2, USB 2.0 and even Thunderbolt 3 standards, so chargers, displays, and drives can be connected using cables instead of a central hub.

Data visibility and separation

The USB 3 standard introduced the ability to use a single cable to send power, data, and video signals. However, due to user settings, sometimes it can only send one or the other and cause the data transfer rate to drop significantly.

On USB4, the firmware (program embedded in a piece of hardware) of the connected device splits the data in transit into two streams on the sending device and then converts the two streams back into a single data block so that the receiving device can read it correctly.

Currently, USB 4 is only for developers, the official version has not been released. It is expected that devices can use USB 4 by mid-2020.

Above is information about the characteristics of USB 4 that Tnhelearning.edu.vn shares with you. If you have any questions, please leave a comment below the article.