USB accessories are different products that are powered or connected through a USB port. These accessories can include external hard drives, cables, and hubs for organizing the connections of multiple USB devices. External hard drives are popular USB accessories, as they allow users to quickly back up data and store large files. These hard drives are typically powered through the USB connector, meaning they don't require a separate power source. USB cables are also popular as they allow users to connect their computers to other external devices like printers, scanners and external monitors. USB hubs are another popular accessory, as they allow users to connect multiple USB devices to a single port. USB accessories are a great way to add functionality to any computer system. They are easy to install and use, and they are relatively inexpensive. Additionally, many of these accessories are portable, meaning they can be easily taken with you on the go. Finally, one of the biggest advantages of USB accessories is that they are backwards-compatible with all major operating systems. This means that users are able to use a single accessory on a variety of devices with different operating systems.