the basics _ 1301 THE BASICSYOUR PERSONAL NAVIGATION DEVICE (Continued)SDGPS antenna (not supplied)input connection portReset holePress with a pointed object to resetSD Memory card slotFixing GrooveUse it to fix the main body on thecradle.SpeakerCradle connecter terminalPort connecting the main unit and thecradle.Hardware Power On/Off switchTo use the device on the built-inbattery power without connectingan external power source, you haveto slide the Hardware Power On/OffSwitch to On.Fixing GrooveUse it to fix the main body on thecradle.