The unit is designed to replace the bezel and screws into a socket like a bezel with the extra long screw provided. I took the faceplate off and fitted it into the socket and when I screwed it in I got a solid connection. It makes sense given the weight of chords and cables it can handle. I haven't experienced another power surge to my knowledge, but it has a blue light to indicate it's working. It works very well as a range of power outlets and USB chargers. I can't give it five stars because I haven't seen it survive a thunderstorm.
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