Why USB is a "must-have" feature
USB is the solution for any PC user who has ever dreamed about an instant, no-hassle way to connect a new digital joystick, a scanner, a set of digital speakers, a digital camera, or a PC telephone to their computer.
Adding an old-fashioned peripheral device can be a scary proposition, requiring a ton of computer savvy and a certain amount of luck!
First you must figure out which port to use from a bewildering array of possibilities. Then in most cases, you have to pry open your PC to install an add-in card and set DIP switches. Then there are those touchy IRQ settings to configure, not to mention other alphabet soup. It is enough to deter most users from even thinking about adding a new peripheral.