Question regarding Graphics card power connector

Introverted1

Reputable
Oct 18, 2014
13
0
4,510
I have an ASUS H97 Plus motherboard
a 550W PSU (full modular) 80 gold cert
and a EVGA Geforce GTX 760 graphics card

I have just finished connecting my graphics card. The box came with two power connectors a 6pin and a 8pin. Do i use both or just one? also where do I plug them under the PSU which label would it be the CPU/PCI-E? any help is greatly appreciated
 

Introverted1

Reputable
Oct 18, 2014
13
0
4,510
Alright i Hooked both up and turned on my computer which is still hooked into motherboard dvi slot and the screen is black. It turned on no problem with no graphics card. I tried to plug it into graphic card dvi slot and still no signal