The other problem is you can not buy updates for it, either yearly or lifetime, because it only works with the maps supplied ...
But in fairness, buying the new version of Mobile PC with new maps is actually cheaper than buying the map update DVD alone. The real issue is that the software-only version does not qualify for the lifetime map updates which are the cheapest of all options for keeping your maps up to date.
And, of course, that you can't add locked maps for other locations like adding Europe to the North America version or vice versa .. or Australia to either one.
...ken...