So I know a lot of people buy open box GPUs, but I assume that's because there aren't a lot of parts. I just purchased an open box Asus RT-N56U for $54 rush shipped because my current router just died. I was warned in the message it could be missing cables because it's open box. Is this something I should be concerned with, or is it just very precautionary of them? Thanks for the input, hope my deal is still as good as I think it is!