24 pin adapter

Hello, I'm trying to build a small form factor PC for emulation and maybe as a home theater PC. Most of the emulation that I plan on doing it on MAME and that emulator benefits the most from the CPU so I won't be using a high voltage graphics card. My problem comes from the case and the PSU, I...

OK so a buddy of mine's computer crashed, he went to best buy and bought a HP Envy with I7-8700, but it did not come with a graphics card. He had just purchased a 1060 and a replacement 550 watt power supply from Best Buy that he put in his old HP. So he figured he could add the 1060 to the new...