That is an AGP graphics card of some sort. It is quite old by today's tech. Chances are unless your computer is older than 6 years you have a 0% chance of that card being compatible with your system. In fact, it would require your computer to be 8 years or older to have a reasonably good chance of being compatible.
I wouldn't toss it out just cause I collect old junk like that, but its unlikely that it will be of any real use to you.