CAUTION: New videographers, do not buy this device unless you understand what it is because we used break-out boxes long ago before USB or Firewire was a acceptable video capture.
We used it specifically with the DV500 card (which is not a graphics card and needs it's own support). I cannot believe that it would have been a PCI or PCI express supported card, I believe it was an ISA, and if I have gotten you out in the woods, and lost at this point, you may have to research deeper.
Suffice to say were using this at a Pro level in 2000. This is only suitable for those who know it.