A card reader scans information on a media card and conveys it to a PC. It works by connecting it specifically to your PC through the USB port or other fringe sport. It contains at least one card openings intended to suit distinctive card sorts. It is usually used to exchange records from the card to the PC for capacity, altering, or printing (for instance, pictures from an advanced camera to your PC). A few card reader are additionally equipped for taking care of information from the PC onto the card.