About USB 3.1, USB 3.0, USB 2.0 and USB

Faster USB 3.1 Introduction

    USB 3.1 has a 10gbps speed. And deliver twice the effective data performance than USB 3.0. It is fully compatible backward with USB cables and connectors.

  • Delivers 10 Gbps USB data rate
  • * 2x improvement over current USB 3.0 5 Gbps data rate
  • Improved data encoding for more efficient data transfer leading to higher through-put and improved I/O power efficiency
  • Compatible with existing USB 3.0 software stacks and device protocols
  • Works with both existing 5 Gbps USB 3.0 hubs and devices, as well as USB 2.0 products

In common words, USB 3.1 is faster and more powerful than before, but it also consumes more power. With its release, the new Type-C 3.1 as a new cable and connectors is also introduced.

About USB 3.0

The USB 3.0 Promoter Group announced to the Media that they will add a much higher data rate and much larger Capabilities at CES 2013.

The data transfer speed will doubles and the new USB 3.0 will be fully backward compatible with USB 2.0 and USB connectors and USB cables. It is said that the specification will be released in the middle of this year.

Let’s have a overview of the USB 3.0 hightlights.

  • New 10 Gbps USB data rate
  • Compatibility with existing cables and connectors
  • Improved data encoding for more efficient data transfer leading to higher through-put and improved I/O power efficiency
  • Compatible with existing USB 3.0 software stacks and device class protocols
  • Compatible with both existing 5 Gbps and new 10 Gbps USB 3.0 hubs and devices, as well as USB 2.0 products

About USB 2.0

The standard for USB version 2.0 was released in April 2000 and serves as an upgrade for USB 1.1.

USB 2.0 (High-speed USB) provides additional bandwidth for multimedia and storage applications and has a data transmission speed 40 times faster than USB 1.1. To allow a smooth transition for both consumers and manufacturers, USB 2.0 has full forward and backward compatibility with original USB devices and works with cables and connectors made for original USB, too.

Supporting three speed modes (1.5, 12 and 480 megabits per second), USB 2.0 supports low-bandwidth devices such as keyboards and mice, as well as high-bandwidth ones like high-resolution Webcams, scanners, printers and high-capacity storage systems. The deployment of USB 2.0 has allowed PC industry leaders to forge ahead with the development of next-generation PC peripherals to complement existing high-performance PCs. The transmission speed of USB 2.0 also facilitates the development of next-generation PCs and applications. In addition to improving functionality and encouraging innovation, USB 2.0 increases the productivity of user applications and allows the user to run multiple PC applications at once or several high-performance peripherals simultaneously.