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Definition and Difference of USB A-type Interface and B-type
Release time:2019-09-27 18:48
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Definition and Difference of USB A-type Interface and B-type Interface
There are many different shapes and sizes of USB interface connectors. Each USB interface is designed for the purpose of effective use of devices, making it easier for users to recognize. Among them,
USB Type-A and USB Type-B interface connectors are widely used. This paper mainly introduces the definition and difference of USB A interface and B interface.
USB Interface Connector
USB接口连接器
USB Type A Interface Definition
USB Type-A, known as Standard A, 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 mouse and keyboard.
USB Type-A is mainly used for host devices (desktop computers, laptops, game consoles, media players, etc.). Even if devices and hosts use different USB versions (such as USB 3.0 and USB 2.0 ports),
type A connectors are always compatible with type A interfaces.
USB Type B Interface Definition
The USB B interface is most common at the other end of the standard USB Type-A cable. It is usually plugged into different peripheral devices (printers, telephones, external hard drives, etc.).
USB Type-B is the same as Type-A, and the end is called B-male, while the port on which the connector is inserted on the peripheral device is called B-female.
Because most peripherals have different shapes and sizes, they have different labels, such as Standard-B, Mini-B USB, Micro-B USB, Micro-USB 3.0 and Standard-B USB 3.0.
The Difference between USB A-type Interface and USB B-type Interface
What's the difference between USB A and B? In addition to their pin configurations, they also have different shapes and sizes. These shapes are designed to fit different sizes of peripherals. In the case of smartphones,
most of these phones can be recharged by using cable connectors, but in order to be effective, small connectors should be used to match the standard cell phone thickness.
The main difference is that type A USB is usually designed to connect to other USB devices as a host, while type B 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, and the other end connected to the printer will be Type-B, which controls the printer.
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