How to power 6 pin riser?

[BitcfinderNot]

I have a 6 pins riser.
From my extra CPU (Corsair RM750x) goes to cables (6(2) and a 8 pin) to the GPU (GTX 1080 ti turbo)
How could I Power the riser. One cable is 8 pin(one pin seems empty). Could I put this end in the PSU and the other end 6(2) in the 6 pin riser?

Many thanx for any advise.

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[Druiz287]

All of my risers have the 6-pin slot soldered in the board, but they’ve come with the adapters for SATA power.  I run 10 GPUs with powered risers but never more than 2 risers per SATA cable.  Did yours not come with this kind of adapter?

[fanatic26]

I run 10 GPUs with powered risers but never more than 2 risers per SATA cable.

This guy is doing it right. All of the people that claim the SATA connections will melt try to run too many on a single psu chain. If you limit yourself to 2 sata riser connections per PSU cable run you will be fine.

[edwardceng]

Yes, you can do your scheme, it's okay with one hole empty. or else, you can buy SATA to 6 Pins connector and use it for powering your riser. You can keep your rig safe (when you are using SATA) to keep limited SATA power likes a few comment above me.