Common hub USB ports are mainly of the following types, each with different characteristics and application scenarios:
1. USB Type-A
Features: The most common type of USB interface, with a wider cable end, no rotational symmetry, and different ends, corresponding to different types of ports.
Application scenarios: Mainly used for the connection of computer external devices such as wired mice, keyboards, and USB flash drives.
Development: USB Type-A also has a miniature version to accommodate smaller devices.
2. USB Type-B
Features: The interface has a small rectangular hole in the middle, which is not commonly used in modern computers, but is more common on external devices such as printers, routers, and scanners.
Application scenarios: Mainly used to connect these specific external devices.
Development: USB Type-B also has a miniature version to accommodate smaller device needs.
3. USB Type-C
Features: A new type of USB interface with a flatter and smaller male port, and the hole in the middle is a flat oval, suitable for small connector pin insertion. Supports insertion in both positive and negative directions, solving the problem of the directionality of traditional USB interfaces.
Application scenarios: Widely used in thinner devices such as MacBooks and smartphones, as well as occasions that require high-speed data transmission and high-power charging.
Advantages: It integrates charging, display, data transmission and other functions, supports greater power transmission (up to 100 watts), and supports more high-power load devices.
4. USB Micro
Features: It is a Micro-sized version of USB-A and USB-B, and the interface is more compact.
Application scenarios: It was once widely used in mobile devices such as smartphones and tablets, but with the popularity of USB Type-C, Micro USB is gradually being eliminated.
Current situation: Although it can still be seen in cheap smartphones and some other electronic devices, it is no longer the mainstream choice for high-end smartphones.
5. USB Mini
Features: It is a smaller version of Type A and Type B USB connectors, divided into two sizes: Mini-A and Mini-B.
Application scenarios: It was once used in portable cameras, game controllers and some old mobile phones.
Current situation: With the development of technology, the USB Mini interface is gradually replaced by more advanced interface types.
6. Other special interfaces
In addition to the common USB interface types mentioned above, there are some special-purpose USB interfaces, such as USB OTG (On-The-Go) interface. This interface allows mobile devices to act as host devices to connect other USB devices.
Common hub USB ports mainly include USB Type-A, USB Type-B, USB Type-C, USB Micro and USB Mini. Among them, USB Type-C is gradually becoming mainstream due to its advantages such as reversible pluggability, high transmission speed and high power transmission. Older interface types such as USB Micro and USB Mini are gradually withdrawing from the market.
