Especially not pinouts!
I have multiple modular PSUs in use, and a box full of cables matching these PSUs. You'd expect some form of standardization, but there isn't. Suppliers do deviate, and especially the six pin 12V plug knows lots of variations.
Warning!
Make sure to document what cable belongs to which power supply. If you mix them up, you can damage your device, your mainboard, and / or your power supply!
Molex
Let's start with the old fashioned one, the Molex connector. The advantage is that the pin connections can be easily verified, so it's a good way to check what cable belongs to what power supply.
BeQuiet 500W Pure Power 11 - Semi-modular
I haven't been able to find a detailed pinout for this one, but it appears to match it's more modular version the Straight Power, so the image below should be correct (but I haven't verified it).
Seasonic Focus Plus Gold GX550
Those Seasonic PSUs have really served me well. In all those years, not a single one has failed me.
My unit came with only two SATA power cables, one for 2 drives, one for 4 drives.
The unit has a single 12V rail, max 45 A / 540 W.
My current home server / NAS (more about that later) currently runs on a Seasonic GX550. The included two SATA cables have only 😁 seven (7) SATA power connectors.
But... I plan to install 8x 4 TB (Diskpool) + 1x 4 TB (CCTV) + 1x 1 TB SSD (swap, temp, shared) is a total of 11 drives. So seven isn't enough...
In my box of 'leftovers' I found some freebie 6 pole connectors that I modified to match the Seasonic pinout, and now my server runs 10 drives...
I know that a GX550 is tight on the 12V rails, at least for this purpose, so I plan to replace it with a GX750 that has a bit of breathing space. On top of that, this GX550 is already 7 years old, so it's not the optimal choice anyway for a new 32+ TB home server...
Seasonic Focus GX White ATX 3 (2024) 750W
Appears to be the same as the Focus Plus above. I noticed that the number of 12V connectors on the power supply has been reduced from 4 to 3. Instead it has a few other additional connectors for other purposes. I guess I could use one of those if I would ever go beyond 12 drives in my home server / NAS...
There were two 4-port SATA power cables included with the GX750, so by using one of the old PSU's power cables I will have 12 in total. That should do.
Corsair RM1000
These Corsair power supplies use their 'Type 4' cable layout, as below. Found here.
This power supply sits in may daily work horse, and it doesn't need that many drives. (In fact, many of the modern cases don't even have space for that many drives, so I had to get creative and design my own sideways drive trays.)
The takeaway
1. Document which cables belong to what power supply!
2. DON'T just plug them in, double check with documentation online!
3. It is possible to modify the cables, but you gotta' be careful...
4. Do NOT mix them up with PCIe power connectors. Those are different!
Double and re-check, then check again.
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