There are several usb interfaces.

There are three kinds of USB interfaces, standard USB interface, MiniUSB interface and MicroUSB interface.

1, standard USB interface: There are two types: type A and type B. Type A is also the most common USB interface in our daily life, which is widely used in mice and keyboards, while type B is commonly used in printers, special displays and other devices.

2.MiniUSB interface: Because of its relatively small size, MiniUSB interface is usually used for some small devices, such as MP3, MP4, radios, etc. Some models of mobile phones also use this interface.

3.MicroUSB interface: MicroUSB interface belongs to the next generation standard interface of MiniUSB. The MicroUSB interface plug is made of stainless steel, and the plugging and unplugging life is increased to 10000 times. Compared with the MiniUSB interface, the height is halved and the volume is smaller.

USB function characteristics

USB is an external USB bus standard, which regulates the connection and communication between computers and external devices. USB interface has hot plug function. USB interface can connect various peripherals, such as mouse and keyboard. USB was jointly launched by companies such as 1996 1994. It has successfully replaced serial port and parallel port and become an essential interface for computers and a large number of intelligent devices.

As we all know, with the popularity of MP3 and digital cameras, there are more and more USB devices around us. However, although these devices all use USB interfaces, the data lines of these devices are not exactly the same. These data lines are the same at the end connected to the PC, but when connecting devices, they usually use various interfaces for the sake of size.