Was AGP only ever used for graphics cards?

Was AGP only ever used for graphics cards? agp slot I have taken out the PCI Graphics card, and installed the AGP Card in the AGP slot, but when I power on the PC, the monitor says that there is agp slot AGP slot of PC motherboards based on Intel 815 chipsets with onboard graphics, like the ASUS CUSL-2 with an AGP Pro slot and Abit SH6 with an AGP Universal slot

agp slot Consider this image of the slot part of two cards, a PCIe 16x graphics card and an AGP 8x graphics card :

agp slot function Comments101 · AGP is Dead! But We Still Like It · A History on AGP: The Accelerated AGP is probably what you would call the interim architecture between PCI and PCIe The PCI spec called for a 33 MHz bus which was very fast