What are USB 3.0 and USB 2.0 connections? How to distinguish?

What are USB 3.0 and USB 2.0 ports on computers and laptops? What are they different? How to distinguish? GREEN ELECTRICAL will help you do this.


What is USB 3.0 and USB 2.0?

USB (Universal Serial Bus) is a very popular connection standard that allows direct connection to peripheral devices such as keyboards, mobile devices, etc.

The difference between USB 3.0 and USB 2.0 standards is the transfer rate and amperage. Released in 2009, devices that are compatible with the USB 3.0 standard can achieve speeds up to 10 times that of USB 2.0.

The USB 3.0 standard can be backward compatible with USB 2.0, which means you can plug a standard USB 3.0 into a USB 2.0 port on a laptop for normal use, but the speed is limited. Therefore, both devices connected to each other must have the same USB 3.0 standard to achieve the highest speed.

Phân biệt USB 3.0 và USB 2.0
Quick comparison of USB 3.0 and USB 2.0

USB 2.0 and USB 3.0 port types

USB 2.0 or USB 3.0 is a data transfer protocol while or MicroUSB is a connection type, classified as follows:

Kết nối USB 3.0 và USB 2.0 là gì? Cách phân biệt?

How to distinguish USB 2.0 and 3.0 ports?

There are a few common ways that you can easily tell the difference between USB 2.0 and 3.0:

+ Look at the color of the USB port

Usually USB 2.0 will always be black and USB 3.0 ports will be blue or any color depending on the manufacturer's design to create similarity in design.

+ Nhìn vào màu sắc của cổng USB

With that said, some designers may change the color of the USB 3.0 port to match the overall design of the product. Then the color can be: red, green, yellow…

+ Nhìn vào màu sắc của cổng USB

+ Notice the icon on the top of the cable/port

On the ends of the cable or at each USB port are placed their own symbols. For USB 3.0, there will usually be the word SS before the USB icon, while USB 2.0 has only the USB symbol. The letter SS on USB 3.0 means Super Speed.

+ Chú ý biểu tượng trên đầu cáp

+ Chú ý biểu tượng trên đầu cáp

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