soory to not noticed this before lol.
The CD is used to repair the connection access between the computer and the router. Inputting it to the computer should give you a file to download then you can use this file without inserting the CD. It's more like a guide file of checking your router and its updates, from there you can also tell whether or whether not you have internet access. You can switch your router to password mode or switch it to something else to not play DS games or any other things.
The USB Disk, I still don't know what that is. Although I have one, but I actually never used it lol. From before when I was eager to get a router back then when I know that's how wi-fi access was I went and do some stupid things. Like I sold 3 games and pay some other cash to get that USB disk and to think I was getting wi-fi access which I wasn't. Then I went purchase a router later on called LynkSys and later on my sister went and purchase her own router since I only use mine online and take it back with me lol back in the days. Her's is a NETGEAR.
I heard Hackers uses that USB Disk you have to access to other routers or their own by setting it up which was my fear from the beginning, but seriously I really don't know what or how to use that USB Disk.