What is Type-A interface?

　　Type-A is a common USB interface type that has a rectangular shape and is commonly used for connections to computers, printers, cameras, and other external devices. Type-A interface is widely used in various consumer electronic products and computer systems.

　　The Type-A interface has the following characteristics:

　　1. Easy to plug and unplug: The Type-A interface is easy to use because it is a standardized interface that can be found on most computers and devices.

　　2. Data transfer speed: Type-A interface supports different versions of USB specifications, including USB 2.0, USB 3.0 and USB 3.1, etc. Each version offers higher data transfer speeds, resulting in faster file transfers and device connections.

　　3. Power supply: The Type-A interface can provide power supply function, which means that it can charge the connected device or provide it with the required power. This makes the Type-A connector ideal for connecting external hard drives, keyboards, mice, and other devices.

　　4. Number of sockets: Type-A interfaces usually have multiple sockets on computers or devices, which allows users to connect multiple external devices to the same computer at the same time.

　　In addition, the Type-A interface also has backward compatibility, which means that you can use a device with a Type-A plug to connect to an older version of the USB interface.