BPN-SAS3-846EL1-N8-1 backplane power connector (24 bay, 8 NVME)

[kkdev]

I decided to upgrade my Supermicro SuperChassis 847BE1C4-R1K23LPB with the newer BPN-SAS3-846EL1-N8-1 backplane, feeling adventurous about the process. The BPN-SAS3-846EL1-N8-1 is an updated version of the BPN-SAS3-846EL1-N8 with support for PCIE 4.0, though Supermicro hasn't provided any documentation on the differences between the two revisions.

I'm currently trying to determine the type of power connector the new backplane uses. Initially, I thought it was a MicroHi connector, but upon closer inspection, it doesn't seem to match. I’d greatly appreciate any insights or guidance on this, and where to find a cable that will convert from Molex 4-pin. I've attached an image for reference. Thank you in advance!

 

[BlueFox]

You're likely going to have to swap the PDU for the newer revision too (PDB-PT847-H8824). Given no one is selling them currently, you'll probably have to ask Supermicro about getting one. It's only offered as part of a single X13 generation barebone, so, you might be out of luck.

 

[Rog2024]

Check out backplane on server AS -2114S-WN24RT, which I believe use same 2x4pin power connectors as the BPN-SAS3-846EL1-N8-1. The Supermicro BOM for AS -2114S-WN24RT lists the power adapter cables needed.

 

[kkdev]

After doing some thorough research, I believe the connector in question is a Molex Microfit 3.0mm (based on my measurements, though I’ll know for sure in a few days). Referring to the diagram on the backplane, it seems like a cable like this one could be compatible:

Drive Cage 4-Pin Molex to MicroFit 3.0mm 8-Pin Cable for Lenovo TS440

It’s possible that this cable might not deliver enough power (since a single Molex connector might be insufficient), but it should still let me test things out.

What do you think—will it work?