Which Model?

Hi I have acquired a Roboteq motor controller from a previous project at my University. I am hoping to use it for my current project but am having trouble figuring out the exact model and documentation for it. The only label I see is AX but it doesn't say any numbers and it doesn't look like the old AX500 or any of those models that I could find but there are also some minor differences between it and the new ones. I'll attach some pictures and if anyone knows what model this is I would really appreciate it so I could get some documentation.