A portable electronic device (100) comprises an attached device (190,195),
a vibrator (175), and a processor (105) coupled between the attached
device (190, 195) and the vibrator (175). The processor (105) is adapted
to detect the attached device (190, 195), determine an identification for
the attached device (190,195), associate a drive voltage with the
identification, and drive the vibrator (175) using the drive voltage.