CPU 8P - CPU 8P(4+4):CPU 8-pin connector for connection to the power connector of the power supply unit (NOTE: the 8-pin connector is ATX 8-pin, not pci-e 8-pin.), CPU 8-pin (4+4) connector for connection to the motherboard (NOTE: the 8-pin connector and the 4+4-pin connector cannot be used interchangeably)