So far so good. I've been having ports fry in my switches periodically when there are thunderstorms. Sometimes the router is fried, sometimes its just the ports; so I went ahead and bought four of these to protect my switches. I am not using these on anything that requires PoE so I don't know if that works properly, but the links show as full 1000 and I haven't had any issues with connectivity. I'll update my review if I have another storm and lose any equipment despite these surge protectors.