This is a spare AC adapter for the HP Jornada 520 and 540 series.

  *  Keeps your Pocket PC charged anywhere in the world

  *  Use your 520 or 540 series HP Jornada while simultaneously recharging the battery

  *  Convenient as a backup power source at home or the office

  *  100-240VAC input, 5VDC output

  *  Part # F1817A