The Belkin AUX Power Cable Kit for Mac Pro provides a set of common AUX power cables that enable you to connect graphics cards and other AUX-powered PCI Express devices to the 6-pin and 8-pin AUX power receptacles in Mac Pro. The kit includes six typical AUX power cables: four 8-pin to 8-pin cables, a 6-pin to 6-pin cable, and an 8-pin to dual 6-pin cable. Mac Pro provides one 6-pin and four 8-pin AUX power connectors internally, enabling connection to accessory devices.