How can i find out if my computer support AGP or PCI-Express

Sketch out the picture at my source, and find the ports on your mother board that match the ones in the picture. An alternative would be using CPU-Z. After running it, go into the "Mainboard" tab, and it will say it under "Graphic Interface." Just be wary that it could be incorrect, because my computer has PCI slots, but somehow it detects them as PCI-E x16...