In the past, the main method of interfacing with a PC was through the PC’s serial or parallel ports, with limited data transfer rates and only one or two sockets available for connecting devices. Designed as a replacement, the Universal Serial Bus system allowed you to connect multiple devices at once, using fast data transfers through a universal interface. During the transition period, many motherboards offered parallel and USB ports, with the parallel interface eventually deprecated as USB devices replaced parallel devices in use. Writer Bio
