I just bought a 3ds xl and I'm looking at getting an r4 card and I have a few questions.
Will any r4 card work with a 3ds xl or do i have to get a specific one, I've seen lots of conflicting answers on the internet, some people say that they will work, some say they wont or that you have to have a specific type.
I know that there aren't any that will play 3ds games yet but I'm not really bothered about that.
Can I buy a second hand one, Do they come with install cds, is it difficult to get them working. Just like, beginner questions basically.

also if anyone has any links to tutorials and such those would be a good help too.
Thanks