Yes that should be very doable with a custom modeler (assuming the device exposes it over SNMP). I can't seem to track down which ZenPack you are referring to that you have installed. Can you provide a link to which Packs you have installed and we can possible figure out what is going on?

Thanks, not sure why, but I dont see this ZenPack listed in the zenpack index page: community/zenpacks

Can you make sure that the "MKDeviceMap" modeler plugin is assigned to the device or device class?.

Also rather than dragging the device into the device class from somewhere else, what happens if you delete it, and then re-add it, adding directly into the device class without any intermediary classes?

Gotcha, was just copy/pasting for the find.

So it sounds like you need to add the MKDeviceMap modeler plugin to that device class, and then remodel the device.

The plugin has '.1.3.6.1.4.1.14988.1.1.4.4.0': 'setOSProductKey'

which if I recall is the attribute for what you are after. Once you get the plugin enabled, I think you will be in business.

Yeah for some reason manufacturer is actually commented out in the modeler code:

https://github.com/zenoss/Community-Zenpacks/blob/master/ZenPacks.AndreaConsadori.Microtick/ZenPacks/AndreaConsadori/Microtick/modeler/plugins/MKDeviceMap.py

    snmpGetMap = GetMap({

      #  '.1.2.840.10036.3.1.2.1.2.2' : 'manufacturer',

        '.1.3.6.1.4.1.14988.1.1.3.9.0' : 'setHWProductKey',

        '.1.3.6.1.4.1.14988.1.1.4.1.0' : 'setHWSerialNumber',

        '.1.3.6.1.4.1.14988.1.1.4.4.0': 'setOSProductKey',

         })

You might get lucky enough to just uncomment that line in your file on your file system and restart, but who knows for sure