Simple Classification and Identification of USB Interface Types

Simple Classification and Identification of USB Interface Types

1. First of all, with more and more smart devices, there will be a variety of USB interfaces. For many people, there are only three interface types: USB interface, Android interface and apple interface. As for type-C, it will be called another Android interface. Antaike Xiaobian, take you to sort out these USB interfaces.

2. Common interfaces type A, micro B, type C;
a. Type A: mainly used on computers
b. Micro B: it is commonly used in Android phones (common in low and medium end, and more and more mobile phones adopt type C), as well as various charging devices
c. Type C: at present, it is commonly used in medium and high-end mobile phones, such as various flagship phones of Android. More and more other devices also have this interface, such as notebook, mobile hard disk, motherboard

3. Many external USB devices such as printer and monitor USB hub adopt type B interface. Generally speaking, the USB interface on PC is standard type A, while the external devices mostly use type B.

4. Compared with 2.0, USB 3.0 not only has advantages in speed, but also has advantages in charging current. At the beginning of 2.0 release, 500mA current can meet the power supply of all USB devices, but with the development of science and technology, today's peripherals usually need more current.

5. Type C is only an interface type. Whether USB 2.0 or 3.0 or 3.1 depends on the manufacturer. Although type C has all kinds of advantages in one, it will not completely replace other USB interfaces, especially type A. We are not willing to bear the higher cost

6. Except type a can be downward compatible with 2.0, other types B, micro B, micro a cannot be downward compatible