Amazon.com: OwlTree 2 Pack EPS12V CPU 8 Pin Female to CPU ATX 8 Pin and ATX 4 Pin Male Power Supply Extension Cable EPS 12V for Motherboard 10.6 inch : Electronics
CPU 8 Pin Male to CPU 8 Pin (4+4 Detachable) Male EPS-12V Motherboard Power Adapter Cable for Corsair Modular Power Supply 25-inch(63cm) - Newegg.com
power supply - Is there a difference between 8-pin EPS12V and PCI-E connectors? - Super User
Athena Power CABLE-YEPS828 EPS-12V 8-pin Y-splitter Power 6"