What's the difference USB 3.1 Gen1,Gen2 and USB 3.2
The USB standards and their specifications can be a little challenging to understand especially after their many updates. We’ll address questions like what’s the difference between USB 3.1 Gen 1 and Gen 2 and talk about why Gen 2 is better than Gen 1 along with other helpful information that’ll allow you to understand everything to know about USB standards.
USB 3.0 was released over ten years ago in 2008 and it was the third major revision to the USB standard. It was a big improvement from USB 2.0 which first arrived in 2000 with transfer speeds of only 480 Mbit/s. Since then, we’ve moved on from USB 3.0 which is now known as USB 3.1 Gen 1. Therefore, USB 3.0 is the same thing as USB 3.1 Gen 1.
USB-IF, the organization that is responsible for maintaining USB (Universal Serial Bus) specifications and compliance, did this to make it easier for developers and manufacturers to have the same relevant information to ensure products are properly developed to be backwards compatible. They are responsible for the naming conventions found on USB cables and devices.
Since then, USB technology has advanced even further with USB 3.2 arriving in 2017. There are four different variations of USB 3.2 with their own special names and meanings. Four variations of USB 3.2 are:
USB 3.2 | USB 3.2 | USB 3.2 | USB 3.2 | |
Transfer Speed | 5Gbps | 10Gbps | 10Gbps | 20Gbps |
Previously Known As | USB 3.1 Gen 1 | -- | USB 3.1 Gen 2 | -- |
Interface Options | USB-A, USB-C, | USB-C Only | USB-A, USB-C, | USB-C Only |
With the arrival of USB 3.2, the industry dominant USB-A connection was beginning to phase out in favor of USB-C. Since USB-C supports higher data transfer speeds and could charge other peripheral devices faster, it has naturally become the main USB connector in utilizing USB 3.2 Gen 2.
USB 4 is next
The next advancement in USB technology will be USB4. It’ll offer 40Gbit/s data transfer speeds, Thunderbolt 3 compatibility and will only use the USB-C connector. USB4 aims to increase bandwidth and is focused on converging the USB-C connector ecosystem and minimize end-user confusion.
Several key designs of the USB4 include:
Display, data and load/store functionality with the use of a single USB-C connector
Universally compatible with existing USB and Thunderbolt products
Define port capabilities for predictable and consistent user experience
Increase host flexibility to configure bandwidth, power management, and other performance-related parameters for system needs
USB came a long way from when it was first introduced and will continue to advance in the future. When it comes to USB 3.1 Gen 1 and Gen 2, the only difference is speed and they're backwards compatible with USB 3.0 and USB 2.0. In the future, with newer generations of USB standards and the arrival of USB-C, there will be even better improvements.