I had the same issue with the power connector, and when I contacted Microsoft support (I used the online chat), they sent me a new one right away. It looks lik

I had the same issue with the power connector, and when I contacted Microsoft support (I used the online chat), they sent me a new one right away. It looks like the new one is designed slightly differently so that the fraying won't happen. For what it's worth, I had the fraying problem on my old MacBook Air charter too.