I need an additioninal EPS power connector?

connerweatherly17

Prominent
Sep 15, 2017
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I am trying to find a power supply for my computer:
Gtx 1080
X299 aurora gaming 9
Corsair vengeance lpx 2666 ddr4 16 gb
1 tb hard drive
7800x

When I enter these parts into pcpartpicker, and i put in a corsair cx750 power supply it tells me i need an additional EPS power connector

1. What is that?
2. Do I need it?
3. If I do, is there a non modular psu that will work with my rig?
4. If not can I get an adapter?