Bosch Cnc, help to identify.

[wasax]

Hello, I am French, sorry for my English,
someone could help me identify this material ?.
have you documentation ?
I make my cncmill with stepper motor, and now i will make cnc with servodrive with this rack. It's a RHO3.1 rack with alim card, 4 acservo controller/driver, 1 I/O interface card, and I have not identified the first card and i don't know how to do.

Thanks