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USB adapters are electronic devices used to connect various computer peripherals and components, such as computers, computer accessories, and data storage devices, through Universal Serial Bus (USB) ports. They come in different types and forms, each designed to serve specific functions or address particular compatibility issues. For instance, USB-to-Ethernet adapters allow computers to connect to wired networks, while USB-C hubs expand the number of available USB ports on devices with limited connectivity options. Some USB adapters also enable backward compatibility between newer and older hardware, such as connecting modern USB-C drives to legacy USB-A ports or using DDR4 RAM in a computer system that originally supported only DDR3 RAM. Overall, USB adapters are essential tools for bridging connectivity gaps and ensuring seamless integration of various devices within the broader technology ecosystem.