CPU 8 pin male end to plug into the power connector of power supply (NOTE: 8 pin male connector is ATX 8 pin, not pci-e 8 pin.), CPU 8 pin (4+4) male end to plug into the Motherboard.(NOTE: the 8 pin end and 4+4 pin male ends cannot be used interchangeably); Compatible with motherboard with ATX 4 pin or 8 pin port(Detachable CPU 8 pin(4+4) end could be used as EPS ATX 8 pin or P4 ATX 4 pin by sliding on/off); Compatible with Corsair modular power supply such as : AX760I/AX860I/AX1200I/AX1500I/AX760/AX850/AX860/HX1200I/HX1000I/HX850I/HX750I/RM1000I/RM850I/RM750I/RM650I/RM1000X/RM850X/RM750X/RM650X/RM550X/RM1000/RM850/RM750/RM650/RM550/RM450/SF600/SF450; (NOTE: Do not work with AX1200.)