For a while around a quarter century ago PC motherboards came with a special ... This was the Accelerated Graphics Port, or AGP, a standard created to more quickly serve the 3D graphics cards ...

Brown slot located nearest to the processor on most motherboards. AGP ports are used exclusivly for graphics cards and are set back and keyed differently so that other expansion cards will not fit ...

You may choose to allow only AGP 1.1, AGP 1.1 and 2.0 ... be sure to Disable the motherboard's on-board sound card. This will free up precious resources and prevent potential conflicts.