Data line interface type

There are many types of data interface. From the early usb1.0 to the present USB 3.0 protocol, it has experienced a long historical evolution and witnessed the progress of science and technology. Let's introduce the types of data line interface in detail.

Type of data interface

USB type a connector is located on the main controller of computer and hub. It is a flat rectangular interface.

USB type B, type B connector is designed for USB peripherals. The shape of the B-type connector is square and has a slightly inclined angle at the top of the connector.

USB C, usb-c or USB type-C connectors are the latest USB connectors on the market.

Micro USB B, smaller than USB mini-b, still supports 480 Mbps high-speed transmission rate and on the go function.

USB mini-b (5-pin), mini-b cable assumes 5 pins. The connector is very small, about two-thirds the width of the type a connector.
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USBmini-b (4-pin), which is mostly used in digital cameras.

USB 3.0 type A is usually located on the main controller of computer and hub. Type a connector is a flat rectangular interface.

USB 3.0b, USB 3.0b connector can be found on USB 3.0 device. The connector is designed to transfer data and power in the USB superspeed application.

The USB 3.0 micro B connector is located on the USB 3.0 device. The connector is designed to transfer data and power in the USB superspeed application.
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Micro USB AB, specially designed for USB on the go devices, can accept micro USB a or micro USB B cable connection.

Micro USB a, the physical size of USB A is smaller than that of USB mini-b, and it still supports 480 Mbps high-speed transmission rate and on the go function.

USB mini-b (Fuji) ®), This is another unofficial connector that is also widely used in digital cameras, especially Fuji ® Some models are manufactured. It's more like a-connector, with a flat rectangular shape.
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In addition to the above, some companies will develop unique interfaces for their products, such as Apple's lighting interface.

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development history

First came USB 1.0, with a speed of only 1.5mb/s (bits per second). Then it was upgraded to USB 1.1, with a speed of 12MB / s.

USB 2.0 is developed on the basis of USB 1.1. Its transmission rate reaches 480mbps, which is equivalent to 60MB / s, which is enough to meet the speed requirements of most peripherals. It can be said that USB 2.0 is much faster than the previous generation.

After USB 2.0, the USB 3.0 promoter group, which is composed of Intel, Microsoft and Texas Instruments, announced that the USB 3.0 standard has been formulated, and the theoretical transmission speed will reach 5.0g/s. Compared with USB 2.0, the transmission speed of USB 3.0 has achieved a qualitative leap.