What are the ways to categorize USB connectors?

Different ways to categorize USB connectors. According to the frequency is divided into high-frequency connectors and low-frequency connectors; according to the shape, there are circular connectors and rectangular connectors; according to the use, there are PCB connectors, cabinet connectors, acoustic connectors, power connectors, special connectors and so on. So what are the USB connector classification methods?1. Low-frequency connectors. The general connector transmission current is below 100MHz. This kind of USB connector transmission current range is large, the structure is mostly multi-wire (up to several hundred lines), including: cable connector. This type of USB connector consists of multi-stranded cable or shielded cable and solid wire, free end connector consists of free end pair connector or fixed connector; Box connector. It consists of two fixed USB connectors. Both are mounted on the frame of the system, using the linear reciprocating motion of the unit parts to achieve connection and separation; spare connector for installing audio. There are many kinds of such USB connectors, such as YS1 ring connector, coaxial connector, plug, audio, etc.; home appliance connector. This kind of USB connector is mainly used for home appliances such as black-and-white TVs, color TVs, and similarly structured home appliances; Office equipment connector. This product is mainly used for copiers, Chinese and English computer printers, microprocessors and other equipment; power supply connectors for electronic and electrical equipment.2. High-frequency connectors. Generally refers to USB connectors for circuits above 100MHz. The structure of this kind of connector has to consider the leakage and reflection of high frequency electric field. It is also called coaxial connector because it is usually connected by coaxial system.3. High and low frequency hybrid connector. Generally refers to USB connectors that contain pairs of low-frequency and high-frequency contacts.

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