UPS options

We had a brief power outage the other day. When my roamio pro restarted it had no network connection (normally wired). I unplugged it, waited a minute then plugged it in and it still didn't work. I tried wireless as well and that also didn't work (my home network was fine). Eventually I left the roamio unplugged for 20 minutes and when it came back up the wired connection was working.

But it left me with two questions - is the roamio pro network hardware on a user-replaceable board of some sort? Is the moca network hardware the same component?

And, what UPS models do people use with their AV/TiVo equipment?

Thanks,
Jeff