13 Aug 2022, 03:01

@JW-0

Take the card out and try it again

This is what Garmin says in the manual"
The device does not appear as a portable device or as a removable drive or volume on my computer
Disconnect the USB cable from the computer.
Switch off the device.
Connect the USB cable to your device and to a USB port on your computer.
TIP: The USB cable should be connected to a USB port on your computer and not to a USB hub.
The device will automatically turn on and switch to MTP mode or USB mass storage mode. Then an image of the device connected to a computer appears on the screen of the device.

NOTE: If several network drives are connected to the computer, Windows® may have problems assigning drive letters to your Garmin® drives. For more information about assigning drive letters, see the Help file for your operating system.