What does "Integrated video is not available if a graphics card is installed" mean?

I was looking at my motherboard when i noticed this in the video section

http://h10025.www1.hp.com/ewfrf/wc/document?lc=en&dlc=de&cc=de&docname=c01080282#N202



Does that mean I cant install a different graphics card or something?!?|||It means just that.



Your onboard integrated video will be disabled if you install a new graphics card.



Only the new card you get will be working. so that the computer isn't wasting its time using both video processors.|||Yes, you can install a different graphics card. That just means once you install a card, the graphics chip that is built in to your motherboard becomes disabled and uses the new one.