Any non-IP based objects can be added as assets in device42. Few differences from a device object:
- Assets don't have unique name constraint. Actually, it doesn't have a name constraint at all. You can add one without assigning a name(not recommended).
- Assets don't count towards licensing.
Here is a quick video on how to quickly add such assets to the rack.
Patch panel management aka Structured cable management is discussed more in details as the device42 documentation site: http://docs.device42.com/patch-panels/