Can I use this cable for Aux power with MSI Z77 mpower? (JPWR3)

mpower77

Reputable
Mar 17, 2014
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The mobo I'm using is a MSI z77 mpower with an additional 6 pin connector for extra power to the GPUs in addition to main motherboard power. I have a cable that can be used to power the graphics cards themselves and it looks like it would fit, it is a pci-e cable that splits from 12 to 8, 6 and 2. Can I plug the 12 into my PSU and the 6 into the aux power on the mobo (with the 8 & 12 unconnected)? Aux power connection is JPWR3.

Also, I found this cable on amazon. Would this work better/also?
http://www.amazon.com/BitFenix-Alchemy-Multisleeve-6-Pin-Extension/dp/B00HVBPCWC/

Thank you for your help!

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