To be honest, I don’t really want to know. I’ve had it for nearly two years. It works very well and is very fast. It’s my fastest router, at least when compared to older models. It doesn’t play up. It’s frozen twice. Just switched the power off and on again, and that sorted it. One major drawback: it doesn’t show me anything at all about the wireless cell. All my other routers show me everything about the cell. Not this one. Still, I only use it for the internet and browsing, and for that it’s really great.