Acer p600 Series Portabl e Navigator fundamentalsHardware interface11 Acer p600 SeriesPortable NavigatorfundamentalsThis chapter describes basic hardware procedures in using your Acer p600 SeriesPortable Navigator. Information on the device’s command interface is also discussed.Hardware interfaceUsing the touch screen backlightUnder some lighting conditions, viewing the information on your device may bedifficult. If this is the case, activate the backlight by tapping on the screen toilluminate the touch screen.Using the SD/MMC slotYour Acer p600 Series Portable Navigator has an SD/MMC slot compatible with arange of SD and MMC storage cards.Also, the Acer p600’s GPS navigation system has its core on the Navigation softwareprogram. Using this program requires that users load the digital maps available in theNavigation software SD card included with the device (SD card is included with certainmodels only).