Yes, definitely have the interface as NMEA In/Out, but once the device is connected, the screen just displays "Garmin" and the USB symbol, and is effectively inoperable. Unplugging the USB turns the GPS off too.
Jay, thanks, I will investigate that unit, but for now I'll have to stick with the older model Etrex to enable EQMOD etc. to find its position. New isn't always better :-)
Thanks,
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