What does USB in USB port stand for?
Universal: Every computer and peripheral uses it (this is more or less true for computers manufactured since the late ’90s). Many PCs provide legacy PS/2 ports for keyboard and mouse, or a parallel port for printers, but some manufacturers (Apple being one of the more famous examples) abandoned all legacy ports. Serial: One bit at a time, in order, to send bytes, which could be bus commands or data to be passed between devices. Interestingly, improvements in technology let USB have much higher data rates than a parallel port, even though a parallel port has 8 data pins to send a whole byte at once. Bus: In computing, it has come to be a general term for a particular data pipeline design. A modern personal computer has memory buses, storage buses like SATA, peripheral buses like USB, and so on. Sources: http://en.wikipedia.
