Product Summary AGPSXG4 is an AGP wearout extender. It can be used on top of the AGP slot in the Apple Computer's motherboard. It is a short and low cost extender designed to prolong the life of the AGP connector in a heavily used environment. It can also be used to prevent the I/O board's gold fingers from damage, when I/O boards are used to test the motherboards repeatedly. The dimension is 4.65" L x 1.15" H.