If you want to power the G8 drive cage's backplane using an HP server PSU with a mining breakout board which only has 6-pin PCIe power outputs then you'll have to either buy or make custom cables. The simplest way to do this (if you're comfortable re-pinning connectors) is to buy PCIe to EPS12V adapter cables and change the order of the pins in the EPS12V end to match the pinout contained in the first post of this thread. If you can't find PCIe to EPS12V adapter cables which are long enough for your intended solution then you can add some standard PCIe to PCIe extension cables, which you'll plug in to the breakout board first, then you add your re-pinned PCIe to EPS12V cables onto the end of those. That's the path I took when setting mine up this way.Hello, thanks for the reply, my intention was using dl380e g8 disk cage as a external disk enclosure for existing dl360 g9, connecting the mini sas sff 8087 cable from dl380e g8 disk backplane to dl360 g9 onboard sata controller ports as picture shown, then powering the disk cage through g9's redundant power supply hstns-pc40.
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Keep in mind: if you plug in a standard PCIe to EPS12V cable into the backplane of the G8 the pin order is wrong and you may do irreparable damage to your backplane and potentially any drives connected to it. If you change the pin order of the connectors make sure you follow the first post to match the pins.