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Nuvi 3790 is not showing in Garmin Express

Former Member
Former Member
I'm trying to register my Nuvi 3790 device. However, when I connect to my Windows PC, it will NOT recognize NUVI device. GPS unit is connected from Nuvi to USB port of the computer. Tried with multiple computers and different USB cables. When connected, it gets the power to GPS unit. But Garmin express cannot detect the Nuvi device.

I tried with pressing the battery sign and checked the USB cable connectivity status. When connected with adapter and USB cable, it gets power and the status says " USB cable not detected". If I connect with another USB directly to the GPS unit (Micro USB), it says "power cable connected".

Please let me know how can I successfully register the device.

Any help would be appreciated
jdx