What is a USB device? What is the structure and main function of a USB?

What is a USB device? What is the function of a USB? These questions seem simple, but you have not really understood the roles of a USB. Let's find out more detailed information about what a USB device is in this article with TipsMake.

What is USB?

What is a USB device ? USB (Universal Serial Bus) is a connection standard developed by Intel and Microsoft, also known as a communication method. USB is used to connect peripheral devices to computers and transfer data back and forth.

Nowadays, to facilitate the connection of devices and minimize the ports on laptops and desktops. USB ports also allow connection to other devices such as: Phones, mice, audio devices, digital cameras, modems, etc.

What is a USB device? What is the structure and main function of a USB? Picture 1

Instead of having to use each port for each device before. This USB port is minimized to save space on the machine, much more convenient. In addition, the USB port can also exchange power between devices.

The USB port can connect up to 63 devices at the same time. The transfer speed is fast up to 12Mbit/s. The USB capacity is also optimized up to 2TB, and can be much higher in the future.

USB is an internal or external storage device

If you are wondering whether USB is an internal or external storage device , the answer is USB is an external storage device . Some common external storage devices include: CD, DVD, portable hard drive.

Structure of USB

USB includes the following parts:

- Small printed circuit board: Contains electronic components and one (or more) flash memory chips soldered directly onto the circuit board.

- Plug connected to USB port: connections often use standard A, allowing them to connect directly to USB slots on the computer.

- Protective case: The case is made of metal or plastic to protect the internal components of the USB firmly enough. The case protects the USB connector and usually has a lid to cover it. Protective cases are often designed in a variety of colors and styles to attract users, some types are also waterproof and shockproof.

- Write-protect switch: Some USB flash drives have a write-protect switch designed to prevent the operating system from writing or modifying data to the drive.

- Operation indicator light: Most USBs have a small indicator light to display the working mode. The way the indicator light works is not consistent among manufacturers: some types when the USB light is on means it is reading or writing and vice versa, the light is off means it is in sleep mode, some types when the light is on means it is in sleep mode and the light is off means it is reading/writing and it will flash continuously during that process. Users should observe their USBs a few times to know the operating rules of the indicator light and not remove the device while it is working.

Main function of a USB

Although its primary function is to store data and transfer data between devices, USB is also used for the following purposes:

1. Computer Repair

Most computers allow booting from a USB flash drive. After plugging in the USB drive, users can manipulate and repair the operating system or faulty software on the computer. Some USBs even allow saving and updating the BIOS, which previously could only be manipulated via floppy disk.

What is a USB device? What is the structure and main function of a USB? Picture 2

2. System administration

Simply plug that USB into your computers and the settings will be copied and applied to the new computer. This will ensure that all computers have the exact same set of settings without any confusion or errors.

3. Electronic key

For computers that require high security, USB can play a role in booting the system or a software on the computer. Some software companies also use specially designed USB to activate each time the software is needed, to prevent unauthorized copying and use of that software.

4. Data security in USB

With a normal USB, anyone can access and edit the data inside it. However, depending on the user's needs, there are some USBs that require a password every time they are used. More advanced types of USBs require fingerprint authentication, and only the first user can access the data inside that USB.

Conclude

Through the article, learn about what a USB port is? Hopefully, readers have understood the detailed information after reading this article and have the most suitable choice for their device. For any questions, please contact hotline: 19001903 for the best advice and support.

Lesley Montoya

Update 16 January 2025

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