This is the N64 backup device. There are a few other names of this device, but they all have Z64 somewhere in the name. I would like one of these to do the new compact flash mod with. (Now that's the largest flash cart I have ever seen! The only requirement I have is that it be the HW3 version. If you don't know which version you have, PM me and we can figure it out.

Thanks,
Matt