What are the types of USB interfaces?

What are the types of USB interfaces?
We come into contact with various USB data cables in our daily life. What is USB? The USB standard was created in 1994, stands for Universal Serial BUS.
USB interfaces are divided into three categories: Type-A, Type-B and Type-C.


The most common one is the Standard Type-A USB interface. This is what we call the “USB interface” every day. It is widely used on keyboards, mice, charging cables, and USB flash drives. Standard Type-A interface has a history of 30 years. In the era when it was invented, keyboards and mice used PS/2 interfaces that did not support hot swapping, and new devices could not be plugged in after the computer was turned on. It can be said that the advent of USB is a huge breakthrough.


You must be familiar with this trapezoidal charging port. This is the Micro Type-B interface. Commonly known as “Android mouth”. It is small and suitable for small portable devices. You can see him on old mobile phones, power banks, MP3 wireless keyboards and mice, etc.


There is only one form of Type-C interface. That is this interface commonly known as “Huawei interface”. Today’s computers, mobile phones, headphones, tablets, and USB flash drives. It’s everywhere
Type-C interface is currently the most advanced interface. It has the following characteristics:
  • It is pluggable in both directions, stable and durable.
  • Strong scalability. Up to 24 metal contacts can realize various functions.
  • Compact size
  • Various functions. Monitor, headphones, charging, keyboards, mouse, and even external graphics card, all with one interface.
  • Powerful performance. The maximum speed is 40gbps under the Thunderbolt 4 protocol, which is 4 times that of the ordinary type -A interface. Supports external 8K displays. Provides up to 100W power supply under PD protocol.

In the future, the type-C interface may replace all other interface to achieve “one line of work in the world”.


Lightning interface is commonly known as “Apple interface”. It is not a USB interface, but Apple’s own creation. Launched in 2012, it has a history of ten years. Compare to the Micro Type-B of the same era, it is small, exquisite and can be plugged and unplugged from both sides. However, the problem of insufficient performance has become increasingly prominent over time. Will soon be replaced by Type-C.

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