Hi @NetAdminCisco1 ,
Thanks for posting your question here I sent this to one of our device TMEs and their first reaction to this question was
They do not want to 100% cloud register the Desk Pro, the next best thing is Webex Edge for Devices: https://help.webex.com/en-us/cy2l2z/Webex-Edge-for-Devices
If this doesn't fully answer your question, feel free to post any follow-ups you have here on this thread and I will send them to the proper teammates.