What is a USB device?
A USB device is any peripheral hardware that connects and runs on a computer's Universal Serial Bus (USB) interface - a standardized socket that allows connection and disconnection of devices without having to reboot the computer. USB controls the peripheral devices in a master/slave relationship.
USB Adaptor a Perfect Solution for Connection Ports
A USB adapter usually has a USB cable on one end and a non-USB cable on the other end. Just plug the correct end into the correct port, and you can overcome what would seem to be an insurmountable problem. The USB adapter solves that problem for you.
Belcarra Announces Hi-Speed USB Composite Solution for TI OMAP 3430 Architecture
Belcarra's Composite Function Framework allows an OMAP34xx embedded device to utilize multiple different types of USB Functions, composite configuration combinations of Networking, Mass Storage , Serial emulation, and vendor-specific USB Functions. Each of these would appear to a Windows system as a USB Device separate and independent from the others.