Hi,
It's an industrial IO card from Addi-Data.
http://www.addi-data.com/wEnglisch/index.shtml
Or, give me the number(s) and I'll look it up in my catalogue. I sell and support these cards. :-)
You can get the drivers manuals and sample programs on the web site.
They do have very capable axis controller cards (APCI-800x), look for one of them in the PC. Another interesting card for CNC use is the APCI-1710 counter-timer-encoder-you-name-it board. There are also older boards not shown on the webpage. Again, give me a APCI-xxxx number and I'll check.
I believe the one in the pic is a 16bit digital IO board. The missing IC probably was never mounted, and is the difference between a 16bit board and a 32bit board. Then there should be some other parts missing too (drivers). These boards have fully protected (and protecting) IO, and a very good alternative to using the unprotected/unfiltered parport. And they are mostly industry standard 24V (options can be had, so must be checked).