What is an AGP slot?

apg slotThe motherboard shown above includes most of the slots that you'll run into these days. It's a little unusual in that you don't often see motherboards which have both PCI-Express slots and anAGP 2X chipsets come with 3.3V slots, AGP 8x chipsets come with 1.5V slots, and some AGP 4x chipsets come with AGP Universal slots. 3.3V slots use the front key notch,