I can not find anything in the documentation about the Digi One PS being PoE capable, but the firmware seems to have a status indicator telling me how it is powered. In my case it shows that it is externally powered.
Is it PoE compatible? If it is, it would simplify a lot for our customers. Also, since the rj-45 connector locks into place the chance of the power being disconnected by some unlucky/whimsy user is practically eliminated.