Install Garmin express on your windows or Mac computer if you want to control or manage the Garmin GPS data from these devices. Garmin Express is a software required for PC’s to access the GPS device. If you have not downloaded this software yet, then go to the Garmin Express link and download for the OS accordingly. You will find the complete instructions related to downloading and installing the Garmin express. For further inquiries, contact us at our customer support number.