One port is 8-Pin for plugging into a modular power supply to dual port PCI-E 8-Pin (6P+2P), for connecting to video cards.
PCI Express power splitter cable (8-pin to dual 8-pin) lets you connect a single (standard) 8-pin PCI Express power connection provided by the computer power supply to two nVidia SLI or ATI CrossfireX video cards that require a 6-pin power connection.
A cost-saving solution, this PCIe 8-pin to dual 8-pin power cable eliminates the expense of upgrading a computer power supply for the sake of compatibility with dual video card systems.
Specifications:
8-Pin To Double PCI-E 8-Pin Splitter Cable
Cable length: 20cm/12.5" (Approx.) 18AWG cable
Connector A: 8-Pin female
Connector B: Double PCI-E 8-Pin (6P+2P) male