How do I know which cable to use?

• The “A” cable is used to connect the camera to the Stylus R200 for Direct Print without the use of your computer.
  
  The “B” cable is used to connect the camera to your computer and for Direct Print to the Stylus Photo R300/R300M, Stylus RX600, or PictureMate.
  
  See Connecting the Camera to Your Printer for details.