Memory Cards for GPS Units

Many Satellite Navigation systems have the ability to use removable data storage media to facilitate updating or changing geographic locations. The top end systems often use a CD while less sophisticated devises predominantly use SD cards, in both cases the cards or disks are purchased with the appropriate map data preloaded.


Memory Cards for GPS Units: What is Backward Compatibility?
As products such as GPS Units improve their specifications from one generation to the next, there are compatibility issues to consider. Devices that only accept the original SD (Secure Digital) card format will not be compatible with SDHC (Secure Digital High Capacity) or SDXC (Secure Digital ‘Xtra Capacity’) memory cards. However, both SDHC and SDXC memory cards are backwards compatible, enabling them to read previous format cards. A device like a GPS Unit is backwards compatible if products designed for the new standard can receive, read, view or play older or less powerful standards and formats.

  • SD devices can only use SD memory cards - SD capacities range from 128MB to 2GB
  • SDHC devices can use both SD memory cards and SDHC memory cards - SDHC capacities range from 4GB to 32GB
  • SDXC devices can use SD memory cards, SDHC memory cards and SDXC memory cards - SDXC capacities range from 64GB to 2TB

Memory Cards for GPS Units - Which type of Memory Card is right for your GPS Unit?
Which type of Memory Card is right for your GPS Unit? Before buying a memory card make sure it is compatible with your GPS Unit. All you really need to consider are 3 questions before you buy. How much storage capacity do you need? What speed do you need? What kind of memory card does your GPS Unit use? To find out what memory card you need check information from the manufacturer, your user manual or for a logo on the device. Or have a glance at our GPS Unit compatibility list.

Memory Cards for GPS Units - Compatibility List
Check our GPS Unit compatibility list for details of your device.

Memory Cards for GPS Units - Compatibility List

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