In order to connect Garmin etrex to the computer, from the USB port pull up the weather cap then insert one end of the USB cable into the USB port of the device. After that plug in the larger end of the USB cable into the system’s USB port. Your Garmin etrex device will be then well connected to your computer, if still you are stuck then, in that case, connect at Garmin Customer Service Uk & http://www.garmincustomerservice.co.uk/