USB accessories are some of the most popular peripherals used by computer users. USB stands for Universal Serial Bus, and it is a standard connection interface used to connect peripheral devices such as keyboards, mice, printers, scanners, external hard drives, webcams, game controllers, flash drives and other storage devices. USB accessories allow people to extend the capabilities of their systems. For example, people can add an external hard drive to store data or an extra monitor to increase the size of their workspace. USB accessories can also be used to add more powerful CPUs or GPUs into systems, allowing users to get more performance out of their machines. USB accessories are also convenient because they are hot swappable. This means that users can plug in and unplug devices without having to restart their computers, making it easy to change between devices. USB accessories can come in a variety of shapes and sizes. Some are small and designed to be plugged into a USB port on the side of a laptop, while others are larger and intended to be plugging into a desktop. They can also come in different speeds, with higher speeds offering faster transfer speeds when transferring files and other data. Overall, USB accessories are great for adding extra functionality to systems and can be very convenient because of their hot-swappable nature. They come in a variety of shapes and sizes and offer different speeds, depending on what you need.