We tore into this a bit in our little chat and pieced together how the setup is run:
For the record: The MXM mezzanine boards required for this little insanity is HP part number 598033-001 .... the two GPUs identified in the documentation are 608293-001 and 608294-001 .... which can be found for various prices with and without mezz board.
You do NOT need the GPU, just the mezz board itself.
Blade power is via banana plug connectors utilizing the two CPU EPS power cables off the PSU, just shoved into screwdown connectors, one of them taped up to hell and back to prevent accidental shorting.
PCIe power is the PSU ATX power connector/motherboard connector with an adapter cable. The ADT-Link one talked about earlier (findable here:
https://www.aliexpress.us/item/3256803623242107.html ) comes with a pre-wired adapter cord for that, but as pointed out, is a bit pricey.
Not sure if this adapter cable came with the JHHMXM (whew, couldn't find that part.. only google reference was this thread), or was hand made, since the connector colors are different - i'd bet handmade. Molex pin extractor and another ATX connector and you're golden to make your own if you can get the pinout right
SATA power connector shown in use in the photo is merely broken out to power fans, so not connected to any 'functional' component at all. If you count fans as not a functional component for a hot running blade.
Ethernet is just a motherboard USB port/connector connected out of the chassis using a USB->Ethernet adapter (wonder why that header's even there... manufacturing testing? Coming off the iLO? USB boot media addon inside the blade?)
All in all pretty great job here, the only sad part is not having any onboard networking brought out in a usable way. Which essentially precludes a lot of OSes other than linux and windows. Well, i mean, there's always the iLO serial console I suppose....
Maybe a second mezz card?
Okay, to summarize....
Insert:
1x BL860c of some type.
1x ATX PSU or other PSU that provides ATX and EPS power
2x set of banana plugs
1x heat sink to make the worthless blade heatsink work okay and not overheat our shit 2x fans (minimum)
1x SATA power cable breakout board to power fans - like
SATA-F-BO-V2AV, SATA Serial ATA Female connector Breakout Board Vertical, eLabGuy
1x HP 409496-001 VGA breakout cable to provide front VGA (so we don't need external GPU)
1x HP 598033-001 mezzanine board, often paired with 608293-001 and 608294-001 GPU
1x MXM to PCIe x16 adapter - like
https://www.aliexpress.us/item/3256803623242107.html (or other solution found as appropriate such as an M.2 adapter and associated M.2 breakout and if needed handmade adapter cord if one did not come with your device of choice)
1x PCIe Network Card compatible with OS of choice
1x pinout adapter / jumper wire for internal USB port (front for keyboard, second for mouse).
Receive:
OpenVMS/HP-UX/Windows/Linux Itanium workstation.
Potentially: Possibly add second MXM breakout kit and mezz for accelerated GPU.