Default Omen Accelerator PSU wasn't modular and had a fixed 1x8pin + 1x6pin power connector. I needed to use another PSU to power the eGPU or risk using a 6pin to 8pin adapter.
This is a WIP although I have since moved away from using it and am uploading it as it seems to be regularly requested via reddit.
The author marked this model as their own original creation.