"With the N4200 Pro, Thecus has further improved upon an already stable, high-performance four bay NAS. The upgraded hardware over the original N4200 make it a solid choice for a multiple user environment, and the mini-UPS and dual DOM features help avoid data loss in the event of a power outage or firmware corruption."
Any major computer upgrade generally requires a full software reinstall too. No so if you heed the advice in the guide to Upgrading a Motherboard without Reinstalling. PCSTATS Tips