USB interface connectors come in many different types of shapes and sizes, with each USB interface designed for effective use by the device, making it easier for users to identify. The use of USB type-a and USB type-b interface connectors is very extensive, and this article mainly introduces the differences in the definition of USB a interface and B interface!

The USB Type-A interface definition is referred to as Standard A, which is the first original design of a USB interface with flat and rectangular shapes. It is mainly used to connect and control other USB devices, such as saving data on external storage devices and using a mouse and keyboard.

USB type-a is mainly used for host devices (desktop computers, laptops, game consoles, media players, etc.). Even if the device and host use different USB versions (such as USB 3.0 and USB 2.0 ports), the A-type connector is always compatible with the A-type interface.

The USB B-type interface definition is most commonly found at the other end of a standard USB type-a cable, which is usually plugged into different peripheral devices (printers, phones, external hard drives, etc.). USB type-b is the same as type-a, with the end called b-male, and the port on the external device where the connector is inserted is called b-female.

Due to the varying shapes and sizes of most peripheral devices, they have different labels, such as Standard b, mini b USB, micro b USB, micro USB 3.0, and Standard b USB 3.0.

What is the difference between a USB A-type interface and a B-type interface? In addition to their pin configurations, they also come in different shapes and sizes. These shapes are designed to fit different peripheral devices of different sizes. Taking smartphones as an example, most of these used phones can be recharged by using cable connectors, but to be effective, small connectors should be used to match the standard thinness of the phone.

The main difference is that the A-type USB is usually designed to connect to other USB devices as a host, while the B-type USB is usually used to control peripheral devices. For example, the one connected to the computer will be type-a, which will be the host, while the other end connected to the printer will be the type-b that controls the printer.