For a serial or USB device, we can only collect a device report once GPSBabel has indicated there's a device there; in which case to generate a report we ask GPSBabel to list as much information as it can about the device.
Make sure the device drivers are installed on your computer
Start RouteBuddy (either demo or fully licensed copy)
Click on the icon for your computer listed under "DEVICES" in the RouteBuddy Source List.
Click the + sign below the System panel to add your device
In the drop down menu register the device as:
A listing for the Device will be shown under DEVICES in the Source List.
If a listing does not appear, it means that RouteBuddy cannot access
Click on this generic device in the DEVICES list and the main RouteBuddy window will change to show a panel for the device.
Click on Report Device and this will report your device back to RouteBuddy for inclusion in a future update of the software.

For disk-based devices, we can only collect a device report once we see a disk attached which meets certain criteria (specifically, a particular file in a particular location on the device: Garmin devices have a configuration file in a particular place, TomTom devices have a different file in a different place, etc).
If you find that when you connect your device that you get an icon on the desktop saying No Name device (or any naming that would indicate that this is a disk-based device) then we can see there's a disk there, but we don't know where to find the file that tells us what kind of device it is (so we just ignore it: to RB it just looks like any other kind of disk).
As an example, we needed to gather data for the Garmin Edge 800 so we asked the customer to:
Send us a screenshot to support@routebuddy.com showing the contents of the "NO NAME" disk and "GARMIN" volumes, and to look for a file called GarminDevice.xml? This is the configuration file we need, so that together with the layout on the volume should let us recognise it.
The best way to take the screenshot is to open each volume, select "As List" from the Finder's "View" menu, then expand some of the folders to show as much of the content as possible.