Last we had power cuts, power went off, 2 minutes later came back on, off again in under a second, then on again a minute, off again in under a second, then 2 minutes came back on of good, all the computer stuff survived apart from the CCTV cameras, the POA switch didn't like it so threw a wobbly, when I reset this morning 2 of the cameras decided they wanted the same IP address so on each refresh we got a different image. As you can only access them via IE took me ages to resolve as I had to find a windows machine.