AGP and PCI?

[_K-I_]

On my computer specs it says there are 3 PCI expansion slots and 1 AGP slot are these for graphics cards or for something else I dont know about.

 

[vnf4ultra]

Agp is for graphics only, and pci can be for sound, lan, hard drive add in cards, modems, usb/firewire ports, and slower graphics cards.