I have a Nuvi 42 navigation device, software version 4.0. The Garmin USB cable is original, and I have Garmin drivers installed on my laptop. The cable is in good condition, and I've tried changing USB ports, but Garmin Express doesn't recognize the navigation device. Additionally, my laptop doesn't detect anything when I plug in the USB cable. There's no specific Windows sound indicating that something is connected to the USB. The navigation device functions normally otherwise, but it has outdated maps from 2014, so I wanted to update them. Could the USB port on the navigation device be faulty? Charging works perfectly fine. Is it possible to update the maps using a MicroSD card, or is there any guidance on how to activate the USB port? I'm seeking assistance, and thank you to everyone.