Cables to power backplane

[bubblehornet]

Hello

I ordered the HL15 chassis and i already have a corsair RM850x PSU. I try to buy 4 power cable to connect my PSU to the 4x molex connectors of the backplane but i cannot find anything…

I read that it’s recommanded to have one cable per molex connector and it seems to now exist.

I tried to found this cable :
https://forum.45homelab.com/uploads/default/original/1X/526652754c9ce63e47651b2cf51808a85f888682.png

45Drives apparently don’t sell their custom cables

For those of you who have built your own HL15 configuration, how did you do it?

[DigitalGarden]

Maybe read through this thread;

Molex Clarification

Hi, Can anyone clarify what the requirements are for the Molex connections to the backplane? Specifically, how many separate cables are required for the 4x Molex connections? Can you daisy-chain 1 cable (i.e. 1x4) or do you need 2x2 or do you need 4x1? I previously purchased a “Quad Molex” (i.e. 1x4) cable from CableMod for my Dark Power 13 750w PSU, but now I am questioning that decision and want to make sure I have ordered the right cable(s). Configurator – CableMod Global Store Here are t…

The TL;DR seems to be that;

a) Using 1 x4 PATA cable from the PSU should be fine in most cases since the only time the amperage would exceed the cable’s rating would be a transient spike on spin-up, not a sustained load, and
b) You can order custom cables from Cablemod–4 x1 cables or 2 x2 cables–if you want to reduce the amperage on any one cable.

The 11th post may be of specific interest;

Molex Clarification

Edit: corrected some misworded parts If 45Drives is selling theirs with 12A individually wired then I’d assume the PSU they’re using splits it’s 12V over multiple discrete rails and to deliver 20A to the backplane they had to do it that way I don’t think it does, its an RM750e and from what I understand splitting the 12v rail is rare and only for very high wattage power supplies, the tech document says nothing about split rails just a total amperage. From a homelab users perspective even if…

as they I believe are using the same PSU as you.

[bubblehornet]

I didn’t saw this posts, thanks a lot i ordered 4 PSU ↔ Molex cables from cablemod

[airforce]

Are the cablemod molex cables suitable?
They appear to be daisy chaining standard molex connectors and not pass-though connectors which are lower profile/height to fit under the backplane.

[DigitalGarden]

? The cables being discussed just go from the PSU to the Power Distribution board on the side of the HL15 next to the PSU, they don’t have to go under the backplane.

[Brandon]

They do sell the power cables but you have to request a special quote for them. I bought them this way. The shipping is kinda expensive for only 4 cables though, not sure if you will want to pay that.

[DigitalGarden]

That works for the RM850x, but won’t for all Corsair PSUs or PSUs from other manufacturers (without re-pinning).

[Kazu]

What custom length molex cables did you buy from cablemod?

[Rcmaniac10]

Here is what i got…

https://store.cablemod.com/configurator/?load=da3a05e7a7f1

Also a picture for reference…

Cablemod cables, and noctua fans all arround

might be a bit overkill for the cables but looks good to me, had to guess cable lenghts, but it’s good enough maybe 50mm shorter on each for a less clumpier look. [20240714_204236]