Search for help with an older Interface

Hey there,
i found an old interface which we identify as an "Parallel Interface 12/5".
So my questions are;
Which Software do i use to interact with it ?
What is it used for ? 
How old is it ?
And where can i install it   ?

Looks like a BOB, with some voltage regulators and relays, so first thing to find is where does power go.
I can not read the markings on the chips.

No double posting.
Deleting the other topic.

on this page there is such a device:
www.cnc-shop.mobasi.com/Elektronik/Steue...harge-Pump::426.html

Quick Google translate:

Connection: 4 reference switches 2 kill switches are supported 2 relays, each with two 8A changeover contacts the 4 axis can run synchronron with another X axis (is set via jumper) Supply voltage 24 - 48 V (only one power supply is required) Outputs 12 and 5 V Cable up to the parallel port of the PC included in the offer