PC power supply CPU EPS 8 pin to 2 PCI-e 8 (6+2) pin PCI Express Graphics Card Internet Power Splitter Cable, PSU CPU 8pin to 2 x GPU Power 8pin Power Adapter Cable - 8 inches

Features
Connect your power supply CPU power header to newer 8-pin PCIe graphics cards which need more power
Convert a EPS CPU 8pin Power connector to two 8-pin PCIe Power Connector
One 8-pin EPS CPU connector on the first side, And two 8-pin(6+2) PEC-e connectors on the second side
CPU 8 pin female end to connect to the CPU 8 pin power cable of your power supply and two 8 pin(6+2) male ends to plug into the video graphics card
Compatible with 6-pin & 8-pin graphics cards from popular manufacturers such as ASUS, ASRock, EVGA, Gigabyte, Radeon, Sapphire, NVIDIA Tesla GPU, etc. (The 8 pin (6+2) ends could be used as 6 pin or 8 pin end by sliding on/off the 2 pin. )

Note
This cable is only designed for graphics vedio cards, it does not work with motherboards. If you connect it with the motherboard, it will definitely burn or damage the motherboards.
This is CPU 8-Pin to dual PCI-E 8-Pin Splitter Cable (CPU to GPU), NOT a 8-pin PCIe to 2x PCIe 8 cable (GPU to GPU), both look very similar