1. USB interface: Type-A interface, Type-B interface and Type-C interface
It turns out that Type-A interface is the standard USB interface that we usually use the most! Indeed, the English name of Type-A interface is "Standard?Type-A?USB", which means it is the standard USB interface, and other shapes of USB interface are its derivatives. For Type-B?USB interface, although it is far from the appearance of the standard Type-A interface high, but it must be everyone will not be unfamiliar with it, because such as printers, monitors, USB?HUB and many other external USB devices are used Type-B?USB interface. Generally speaking, the USB interfaces on PCs are standard Type-A, while external devices mostly use Type-B.
Finally, it is the new Type-C interface that has come out. It's much smaller than both Type-A and Type-B, rivaling even Mini-USB and Micro-USB in size, and is the newest USB interface form factor. In addition, Type-C is an interface type that can be used on both PCs (master) and external devices (slave), which is groundbreaking.
2.● USB interface family photo
After the release of Type-C interface, some friends asked me: "Is it that Mini-USB is called Type-A, Micro-USB is called Type-B, and this new one is called Type-C?" In fact, I have told you that it is not so. In fact, I have told you that this is not the case, so after reading the following USB interface family photo, I believe we must understand.
The whole family of USB ports (except Type-C)
There's nothing more intuitive than a picture. We often use Mini-USB and Micro-USB are based on the USB2.0 transmission protocol was born, the magic is, they are also divided into Type-A and Type-B. To the USB3.0 era, due to the transmission speed of the increase in the number of pins brought about by the increase in the number of pins, so only Type-A?USB3.0 interface to keep the same as in the past shape, the same as the previous shape, Type-B and Micro-USB interface. Both Type-B and Micro-USB have changed shape (increased size).
3. ● Mini-USB2.0 ports
The Mini-USB ports are also very familiar to us, and are used in a wide range of digital products, such as MP3 players, digital cameras, and portable hard drives. Compared to standard USB ports and Type-B USB ports, Mini-USB ports are much smaller in size. Most of the Mini-USB ports you may have seen are Mini-B, because Mini-A is not as robust as Type-B, which is why it has been replaced by Mini-B. But don't worry, even older devices with Mini-A ports can still use Mini-B cables.
4. Micro-USB2.0 interface
The Mini-USB interface is divided into A/B, and Micro-USB is no exception. Micro-USB is an improved version of the Mini-USB interface, which is once again smaller in size and more suitable for the increasingly slimmer and lighter mobile devices. The vast majority of the portable devices we use today utilize the Micro-USB interface, and Mini-USB has been largely eliminated. In addition, the European Union has also mandated that by 2017, all cell phones sold in the joining countries must use the Micro-USB interface, which is a good indication of its success and vast coverage. Similarly, the Type-B type of Micro-USB interface is an improved version of Type-A type, and it is not difficult to see from the picture that the Micro-A interface is shaped as a rectangle, which greatly increases the rate of misplugging! To know even the standard USB interface is still often plugged into the wrong us, how can play so effective Micro-A. Soon Micro-B appeared, the anti-dumb design is excellent, Micro-A is also quickly eliminated.
5.● Micro-USB3.0 interface
Because the transmission speed of the USB3.0 interface has increased dramatically compared to USB2.0, its pins have also changed. As a result, the Micro-USB3.0 interface has had to change in appearance. micro-USB3.0 interfaces are the same height as micro-USB2.0, but have grown significantly in length. Similarly, type A and B also appeared on the Micro-USB3.0 ...... I really can't understand why the USB Association every time in the small USB interface to get a A and B, here is not much to spit. The most common Micro-USB3.0 interface devices that we come into contact with are high-speed portable hard drives, the vast majority of which are Type-B types.
6. ●USB?Type-B
The same Type-B interface, USB3.0 than USB2.0 increased interface height
Standard Type-A?USB interface due to the size of the larger, so in the development of the USB3.1 today, it has not changed the appearance. But the Type-B?USB interface is slightly more awkward, because it's not much smaller than the standard Type-A?USB interface, but perhaps it was not designed with future development in mind, resulting in increased pin placement. So the Type-B?USB3.0 interface had to change its appearance and increase its height compared to Type-B?USB2.0.