Can the computer see the device?
Approximately how old is the 235?
If you haven't already done so, try using a different USB cable and let me know if that helps...
is the device turned on?
Does the computer make any noise at all when you connect the device?
What all drives are showing in Computer?
Have you checked disk management?
"Disk Management" is the software element of Windows that allows it to recognize what internal and external disks and storage devices are connected.
To access it, right-click the bottom-left corner (or Start button) on the desktop to open Quick Access Menu, and then choose Disk Management. Let me know what is showing there.
Yes I am familiar with this product.
I am not sure what metadata you are referring to.
What else shows in Disk Management? Does it show the connected Garmin device with or without a drive letter?