USB accessories are gadgets and devices that are used to enhance the capabilities of computer systems. They range from simple data storage devices to high-tech audio and video peripherals. On the data storage side, USB flash drives or optical drives can store music, photos, movies and other files to save a large amount of data quickly. Some of the accessories serve as backup solutions or offer the ability for one computer to share data with another. USB card readers and hubs allow for fast access to a variety of media cards, and USB hubs are used to extend the number of ports available in a computer system. On the audio and video side, USB microphones, headsets and speakers can be used to enable Skype or other VoIP services on a PC. An external DVD player can be connected to a laptop via USB to watch movies without having to carry a separate player. Webcams, TV tuners, and video capture devices are also available with USB functionality. USB accessories allow for increased productivity, improved user experience, and faster data transfer rates. They are also more convenient than standard peripherals, with plug and play capabilities that make them easy to install. With a wide variety of USB accessories available, users are sure to find devices to meet their needs.