I received the D-Link DSL-2640S for my broadband connection. I believe at present, these cannot have the username & password extracted from them.

I was curious to see what chipset the D-Link's had in them, so I took the cover off of it and took a picture.

I didnt know if it would be of any use to anyone, but I thought it might help someone find a way of managing to crack this router with regards to been able to extract the username & passwords from them.

Here's some pictures of the setup interface.

Hope these are of help to someone