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Hello, I am Ayakami (@ayakami_meguru).
This blog is a personal interview [Repo], while portraying its contents [AYAKARU], and form a blog.
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This time, I will write about USB terminals, which are now indispensable in our daily lives!
Rough classification
USB terminals are classified into A-type, B-type, and C-type according to their shapes.
A type
Type A is a rectangular terminal that plugs directly into the USB port of a computer or peripheral device. It supports both data transfer and charging, and is also used in charging cables for smartphones. USB 2.0 has a maximum transfer rate of 480 Mbps, while USB 3.0 has a maximum transfer rate of 5 Gbps. USB 2.0 is the most common type of USB terminal due to its high compatibility and versatility.
B type
There are three types of B-type: Standard B, Micro-B, and Mini-B. All are equipped on the side of peripherals such as printers and scanners, which are connected to the PC via a cable. They are designed for data transfer only and do not support charging. Standard B is larger and more stable, making it suitable for larger devices, while Micro-B and Mini-B are smaller terminals, suitable for embedded applications such as portable audio.
C Type
Type C offers excellent reversible pluggability and high-speed transfers and is compatible with USB 3.1 and higher high-speed interfaces. Capable of up to 10Gbps transfer and 100W fast charging, Type-C is the next-generation USB standard with small size and double-sided pluggability, and is found in the latest smartphones and notebook PCs.
In addition, there are several terms used to describe USB 3.0 data transfer rates, including SuperSpeed (SS), SS+ for USB 3.1, and SS 10 and SS20 for USB 3.2. These are alternative designations that do not have the same numbers as the actual transfer rate, but indicate the difference between the high-speed interfaces.
Notes on Selection
When selecting a USB terminal, it is necessary to check not only the format but also the actual supported standard, transfer rate, and charging function. When purchasing peripherals, it is recommended to check this point carefully according to the intended use.
For example, for high-capacity storage, it is recommended to choose a C-type with fast transfer speed USB 3.2 Gen2x2 or higher, and for smartphone charging, a combination of Power Delivery and C-type should be selected. It is wise to check the latest USB standards and choose the terminal that best suits your needs.
The above is a detailed explanation of the types and features of USB terminals, high-speed standards, and points to consider when choosing one; USB terminals are essential knowledge when working with IT devices, so make sure you understand and use them properly!
