Ik heb nu dit gevonden op internet:
I'll shed some light on the issue.
The ASRock SLI/XFire Switch Cards' purpose was explained by "ericeod". It is to switch between x16 with one video card and x8/x8 for each PCIe slot when running 2 video cards. It's called an SLI/Crossfire because the same little card is used in ASRocks' SLI supporting motherboards and their Crossfire supporting motherboards. The card can be used in either, so it says both. The support of SLI or Crossfire is completely dependent on your motherboard.
Dus ik kan alleen ATI kaarten draaien met het moederbord dat ik heb?