apg slotAGP 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,On most motherboards, an AGP slot is black in colour while PCI slots are coloured white. So what you are looking for is a black slot close to a number of white coloured slots on