They do seem a little precious. Just had an identical situation here and my KoalaSafe unit is plugged into the USB socket on a premium branded power board that has a built in surge protector. Didn’t think I could do much else on my side. Bit of a shame really. Everything else plugged into the board came back fine. Have ordered a KoalaSafe Dome as a replacement and just hope they are a little more robust and fingers crossed they don’t hang so often when receiving automatic firmware updates.